diff --git a/wp-admin/js/user-profile.js b/wp-admin/js/user-profile.js
index e4f249fe35..2b0fe5a5fc 100644
--- a/wp-admin/js/user-profile.js
+++ b/wp-admin/js/user-profile.js
@@ -5,6 +5,7 @@
 /* global ajaxurl, pwsL10n, userProfileL10n */
 (function($) {
 	var updateLock = false,
+		isSubmitting = false,
 		__ = wp.i18n.__,
 		$pass1Row,
 		$pass1,
@@ -15,6 +16,8 @@
 		$submitButtons,
 		$submitButton,
 		currentPass,
+		$form,
+		originalFormContent,
 		$passwordWrapper;
 
 	function generatePassword() {
@@ -454,6 +457,12 @@
 
 		bindPasswordForm();
 		bindPasswordResetLink();
+		$submitButtons.on( 'click', function() {
+			isSubmitting = true;
+		});
+
+		$form = $( '#your-profile, #createuser' );
+		originalFormContent = $form.serialize();
 	});
 
 	$( '#destroy-sessions' ).on( 'click', function( e ) {
@@ -481,7 +490,10 @@
 		if ( true === updateLock ) {
 			return __( 'Your new password has not been saved.' );
 		}
-	} );
+		if ( originalFormContent !== $form.serialize() && ! isSubmitting ) {
+			return __( 'Changes that you made may not be saved.' );
+		}
+	});
 
 	/*
 	 * We need to generate a password as soon as the Reset Password page is loaded,
diff --git a/wp-admin/js/user-profile.min.js b/wp-admin/js/user-profile.min.js
index 31f3609e0c..859ee84ab9 100644
--- a/wp-admin/js/user-profile.min.js
+++ b/wp-admin/js/user-profile.min.js
@@ -1,2 +1,2 @@
 /*! This file is auto-generated */
-!function(o){var e,a,t,n,i,r,p,d,l,c,u=!1,h=wp.i18n.__;function f(){"function"!=typeof zxcvbn?setTimeout(f,50):(!a.val()||c.hasClass("is-open")?(a.val(a.data("pw")),a.trigger("pwupdate")):b(),_(),m(),1!==parseInt(r.data("start-masked"),10)?a.attr("type","text"):r.trigger("click"),o("#pw-weak-text-label").text(h("Confirm use of weak password")),"mailserver_pass"!==a.prop("id")&&o(a).trigger("focus"))}function w(s){r.attr({"aria-label":h(s?"Show password":"Hide password")}).find(".text").text(h(s?"Show":"Hide")).end().find(".dashicons").removeClass(s?"dashicons-hidden":"dashicons-visibility").addClass(s?"dashicons-visibility":"dashicons-hidden")}function m(){r||(r=e.find(".wp-hide-pw")).show().on("click",function(){"password"===a.attr("type")?(a.attr("type","text"),w(!1)):(a.attr("type","password"),w(!0))})}function v(s,e,a){var t=o("<div />");t.addClass("notice inline"),t.addClass("notice-"+(e?"success":"error")),t.text(o(o.parseHTML(a)).text()).wrapInner("<p />"),s.prop("disabled",e),s.siblings(".notice").remove(),s.before(t)}function g(){var s;e=o(".user-pass1-wrap, .user-pass-wrap, .mailserver-pass-wrap, .reset-pass-submit"),o(".user-pass2-wrap").hide(),d=o("#submit, #wp-submit").on("click",function(){u=!1}),p=d.add(" #createusersub"),n=o(".pw-weak"),(i=n.find(".pw-checkbox")).on("change",function(){p.prop("disabled",!i.prop("checked"))}),(a=o("#pass1, #mailserver_pass")).length?(l=a.val(),1===parseInt(a.data("reveal"),10)&&f(),a.on("input pwupdate",function(){a.val()!==l&&(l=a.val(),a.removeClass("short bad good strong"),_())})):a=o("#user_pass"),t=o("#pass2").on("input",function(){0<t.val().length&&(a.val(t.val()),t.val(""),l="",a.trigger("pwupdate"))}),a.is(":hidden")&&(a.prop("disabled",!0),t.prop("disabled",!0)),c=e.find(".wp-pwd"),s=e.find("button.wp-generate-pw"),m(),s.show(),s.on("click",function(){u=!0,s.not(".skip-aria-expanded").attr("aria-expanded","true"),c.show().addClass("is-open"),a.attr("disabled",!1),t.attr("disabled",!1),f(),w(!1),wp.ajax.post("generate-password").done(function(s){a.data("pw",s)})}),e.find("button.wp-cancel-pw").on("click",function(){u=!1,a.prop("disabled",!0),t.prop("disabled",!0),a.val("").trigger("pwupdate"),w(!1),c.hide().removeClass("is-open"),p.prop("disabled",!1),s.attr("aria-expanded","false")}),e.closest("form").on("submit",function(){u=!1,a.prop("disabled",!1),t.prop("disabled",!1),t.val(a.val())})}function b(){var s=o("#pass1").val();if(o("#pass-strength-result").removeClass("short bad good strong empty"),s&&""!==s.trim())switch(wp.passwordStrength.meter(s,wp.passwordStrength.userInputDisallowedList(),s)){case-1:o("#pass-strength-result").addClass("bad").html(pwsL10n.unknown);break;case 2:o("#pass-strength-result").addClass("bad").html(pwsL10n.bad);break;case 3:o("#pass-strength-result").addClass("good").html(pwsL10n.good);break;case 4:o("#pass-strength-result").addClass("strong").html(pwsL10n.strong);break;case 5:o("#pass-strength-result").addClass("short").html(pwsL10n.mismatch);break;default:o("#pass-strength-result").addClass("short").html(pwsL10n.short)}else o("#pass-strength-result").addClass("empty").html("&nbsp;")}function _(){var s=o("#pass-strength-result");s.length&&(s=s[0]).className&&(a.addClass(s.className),o(s).is(".short, .bad")?(i.prop("checked")||p.prop("disabled",!0),n.show()):(o(s).is(".empty")?(p.prop("disabled",!0),i.prop("checked",!1)):p.prop("disabled",!1),n.hide()))}o(function(){var s,a,t,n,i=o("#display_name"),e=i.val(),r=o("#wp-admin-bar-my-account").find(".display-name");o("#pass1").val("").on("input pwupdate",b),o("#pass-strength-result").show(),o(".color-palette").on("click",function(){o(this).siblings('input[name="admin_color"]').prop("checked",!0)}),i.length&&(o("#first_name, #last_name, #nickname").on("blur.user_profile",function(){var a=[],t={display_nickname:o("#nickname").val()||"",display_username:o("#user_login").val()||"",display_firstname:o("#first_name").val()||"",display_lastname:o("#last_name").val()||""};t.display_firstname&&t.display_lastname&&(t.display_firstlast=t.display_firstname+" "+t.display_lastname,t.display_lastfirst=t.display_lastname+" "+t.display_firstname),o.each(o("option",i),function(s,e){a.push(e.value)}),o.each(t,function(s,e){e&&(e=e.replace(/<\/?[a-z][^>]*>/gi,""),t[s].length)&&-1===o.inArray(e,a)&&(a.push(e),o("<option />",{text:e}).appendTo(i))})}),i.on("change",function(){var s;t===n&&(s=this.value.trim()||e,r.text(s))})),s=o("#color-picker"),a=o("#colors-css"),t=o("input#user_id").val(),n=o('input[name="checkuser_id"]').val(),s.on("click.colorpicker",".color-option",function(){var s,e=o(this);if(!e.hasClass("selected")&&(e.siblings(".selected").removeClass("selected"),e.addClass("selected").find('input[type="radio"]').prop("checked",!0),t===n)){if((a=0===a.length?o('<link rel="stylesheet" />').appendTo("head"):a).attr("href",e.children(".css_url").val()),"undefined"!=typeof wp&&wp.svgPainter){try{s=JSON.parse(e.children(".icon_colors").val())}catch(s){}s&&(wp.svgPainter.setColors(s),wp.svgPainter.paint())}o.post(ajaxurl,{action:"save-user-color-scheme",color_scheme:e.children('input[name="admin_color"]').val(),nonce:o("#color-nonce").val()}).done(function(s){s.success&&o("body").removeClass(s.data.previousScheme).addClass(s.data.currentScheme)})}}),g(),o("#generate-reset-link").on("click",function(){var e=o(this),s={user_id:userProfileL10n.user_id,nonce:userProfileL10n.nonce},s=(e.parent().find(".notice-error").remove(),wp.ajax.post("send-password-reset",s));s.done(function(s){v(e,!0,s)}),s.fail(function(s){v(e,!1,s)})})}),o("#destroy-sessions").on("click",function(s){var e=o(this);wp.ajax.post("destroy-sessions",{nonce:o("#_wpnonce").val(),user_id:o("#user_id").val()}).done(function(s){e.prop("disabled",!0),e.siblings(".notice").remove(),e.before('<div class="notice notice-success inline"><p>'+s.message+"</p></div>")}).fail(function(s){e.siblings(".notice").remove(),e.before('<div class="notice notice-error inline"><p>'+s.message+"</p></div>")}),s.preventDefault()}),window.generatePassword=f,o(window).on("beforeunload",function(){if(!0===u)return h("Your new password has not been saved.")}),o(function(){o(".reset-pass-submit").length&&o(".reset-pass-submit button.wp-generate-pw").trigger("click")})}(jQuery);
\ No newline at end of file
+!function(o){var s,a,t,n,i,r,p,d,l,c,u,h,f=!1,m=!1,w=wp.i18n.__;function v(){"function"!=typeof zxcvbn?setTimeout(v,50):(!a.val()||h.hasClass("is-open")?(a.val(a.data("pw")),a.trigger("pwupdate")):_(),C(),b(),1!==parseInt(r.data("start-masked"),10)?a.attr("type","text"):r.trigger("click"),o("#pw-weak-text-label").text(w("Confirm use of weak password")),"mailserver_pass"!==a.prop("id")&&o(a).trigger("focus"))}function g(e){r.attr({"aria-label":w(e?"Show password":"Hide password")}).find(".text").text(w(e?"Show":"Hide")).end().find(".dashicons").removeClass(e?"dashicons-hidden":"dashicons-visibility").addClass(e?"dashicons-visibility":"dashicons-hidden")}function b(){r||(r=s.find(".wp-hide-pw")).show().on("click",function(){"password"===a.attr("type")?(a.attr("type","text"),g(!1)):(a.attr("type","password"),g(!0))})}function y(e,s,a){var t=o("<div />");t.addClass("notice inline"),t.addClass("notice-"+(s?"success":"error")),t.text(o(o.parseHTML(a)).text()).wrapInner("<p />"),e.prop("disabled",s),e.siblings(".notice").remove(),e.before(t)}function k(){var e;s=o(".user-pass1-wrap, .user-pass-wrap, .mailserver-pass-wrap, .reset-pass-submit"),o(".user-pass2-wrap").hide(),d=o("#submit, #wp-submit").on("click",function(){f=!1}),p=d.add(" #createusersub"),n=o(".pw-weak"),(i=n.find(".pw-checkbox")).on("change",function(){p.prop("disabled",!i.prop("checked"))}),(a=o("#pass1, #mailserver_pass")).length?(l=a.val(),1===parseInt(a.data("reveal"),10)&&v(),a.on("input pwupdate",function(){a.val()!==l&&(l=a.val(),a.removeClass("short bad good strong"),C())})):a=o("#user_pass"),t=o("#pass2").on("input",function(){0<t.val().length&&(a.val(t.val()),t.val(""),l="",a.trigger("pwupdate"))}),a.is(":hidden")&&(a.prop("disabled",!0),t.prop("disabled",!0)),h=s.find(".wp-pwd"),e=s.find("button.wp-generate-pw"),b(),e.show(),e.on("click",function(){f=!0,e.not(".skip-aria-expanded").attr("aria-expanded","true"),h.show().addClass("is-open"),a.attr("disabled",!1),t.attr("disabled",!1),v(),g(!1),wp.ajax.post("generate-password").done(function(e){a.data("pw",e)})}),s.find("button.wp-cancel-pw").on("click",function(){f=!1,a.prop("disabled",!0),t.prop("disabled",!0),a.val("").trigger("pwupdate"),g(!1),h.hide().removeClass("is-open"),p.prop("disabled",!1),e.attr("aria-expanded","false")}),s.closest("form").on("submit",function(){f=!1,a.prop("disabled",!1),t.prop("disabled",!1),t.val(a.val())})}function _(){var e=o("#pass1").val();if(o("#pass-strength-result").removeClass("short bad good strong empty"),e&&""!==e.trim())switch(wp.passwordStrength.meter(e,wp.passwordStrength.userInputDisallowedList(),e)){case-1:o("#pass-strength-result").addClass("bad").html(pwsL10n.unknown);break;case 2:o("#pass-strength-result").addClass("bad").html(pwsL10n.bad);break;case 3:o("#pass-strength-result").addClass("good").html(pwsL10n.good);break;case 4:o("#pass-strength-result").addClass("strong").html(pwsL10n.strong);break;case 5:o("#pass-strength-result").addClass("short").html(pwsL10n.mismatch);break;default:o("#pass-strength-result").addClass("short").html(pwsL10n.short)}else o("#pass-strength-result").addClass("empty").html("&nbsp;")}function C(){var e=o("#pass-strength-result");e.length&&(e=e[0]).className&&(a.addClass(e.className),o(e).is(".short, .bad")?(i.prop("checked")||p.prop("disabled",!0),n.show()):(o(e).is(".empty")?(p.prop("disabled",!0),i.prop("checked",!1)):p.prop("disabled",!1),n.hide()))}o(function(){var e,a,t,n,i=o("#display_name"),s=i.val(),r=o("#wp-admin-bar-my-account").find(".display-name");o("#pass1").val("").on("input pwupdate",_),o("#pass-strength-result").show(),o(".color-palette").on("click",function(){o(this).siblings('input[name="admin_color"]').prop("checked",!0)}),i.length&&(o("#first_name, #last_name, #nickname").on("blur.user_profile",function(){var a=[],t={display_nickname:o("#nickname").val()||"",display_username:o("#user_login").val()||"",display_firstname:o("#first_name").val()||"",display_lastname:o("#last_name").val()||""};t.display_firstname&&t.display_lastname&&(t.display_firstlast=t.display_firstname+" "+t.display_lastname,t.display_lastfirst=t.display_lastname+" "+t.display_firstname),o.each(o("option",i),function(e,s){a.push(s.value)}),o.each(t,function(e,s){s&&(s=s.replace(/<\/?[a-z][^>]*>/gi,""),t[e].length)&&-1===o.inArray(s,a)&&(a.push(s),o("<option />",{text:s}).appendTo(i))})}),i.on("change",function(){var e;t===n&&(e=this.value.trim()||s,r.text(e))})),e=o("#color-picker"),a=o("#colors-css"),t=o("input#user_id").val(),n=o('input[name="checkuser_id"]').val(),e.on("click.colorpicker",".color-option",function(){var e,s=o(this);if(!s.hasClass("selected")&&(s.siblings(".selected").removeClass("selected"),s.addClass("selected").find('input[type="radio"]').prop("checked",!0),t===n)){if((a=0===a.length?o('<link rel="stylesheet" />').appendTo("head"):a).attr("href",s.children(".css_url").val()),"undefined"!=typeof wp&&wp.svgPainter){try{e=JSON.parse(s.children(".icon_colors").val())}catch(e){}e&&(wp.svgPainter.setColors(e),wp.svgPainter.paint())}o.post(ajaxurl,{action:"save-user-color-scheme",color_scheme:s.children('input[name="admin_color"]').val(),nonce:o("#color-nonce").val()}).done(function(e){e.success&&o("body").removeClass(e.data.previousScheme).addClass(e.data.currentScheme)})}}),k(),o("#generate-reset-link").on("click",function(){var s=o(this),e={user_id:userProfileL10n.user_id,nonce:userProfileL10n.nonce},e=(s.parent().find(".notice-error").remove(),wp.ajax.post("send-password-reset",e));e.done(function(e){y(s,!0,e)}),e.fail(function(e){y(s,!1,e)})}),p.on("click",function(){m=!0}),c=o("#your-profile, #createuser"),u=c.serialize()}),o("#destroy-sessions").on("click",function(e){var s=o(this);wp.ajax.post("destroy-sessions",{nonce:o("#_wpnonce").val(),user_id:o("#user_id").val()}).done(function(e){s.prop("disabled",!0),s.siblings(".notice").remove(),s.before('<div class="notice notice-success inline"><p>'+e.message+"</p></div>")}).fail(function(e){s.siblings(".notice").remove(),s.before('<div class="notice notice-error inline"><p>'+e.message+"</p></div>")}),e.preventDefault()}),window.generatePassword=v,o(window).on("beforeunload",function(){return!0===f?w("Your new password has not been saved."):u===c.serialize()||m?void 0:w("Changes that you made may not be saved.")}),o(function(){o(".reset-pass-submit").length&&o(".reset-pass-submit button.wp-generate-pw").trigger("click")})}(jQuery);
\ No newline at end of file
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 5bc25bc182..51a04087a3 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.6-alpha-58136';
+$wp_version = '6.6-alpha-58137';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.