diff --git a/wp-includes/js/heartbeat.js b/wp-includes/js/heartbeat.js
index 4f71c1cab4..c6950ef7df 100644
--- a/wp-includes/js/heartbeat.js
+++ b/wp-includes/js/heartbeat.js
@@ -155,7 +155,7 @@
 				 */
 				if ( options.minimalInterval ) {
 					options.minimalInterval = parseInt( options.minimalInterval, 10 );
-					settings.minimalInterval = options.minimalInterval > 0 && options.minimalInterval <= 600 ? options.minimalInterval * 1000 : 0;
+					settings.minimalInterval = options.minimalInterval > 0 && options.minimalInterval <= 600 ? options.minimalInterval : 0;
 				}
 
 				if ( settings.minimalInterval && settings.mainInterval < settings.minimalInterval ) {
@@ -176,6 +176,9 @@
 			// Convert to milliseconds.
 			settings.mainInterval = settings.mainInterval * 1000;
 			settings.originalInterval = settings.mainInterval;
+			if ( settings.minimalInterval ) {
+				settings.minimalInterval = settings.minimalInterval * 1000;
+			}
 
 			/*
 			 * Switch the interval to 120 seconds by using the Page Visibility API.
diff --git a/wp-includes/js/heartbeat.min.js b/wp-includes/js/heartbeat.min.js
index d301271068..6f422a8d1b 100644
--- a/wp-includes/js/heartbeat.min.js
+++ b/wp-includes/js/heartbeat.min.js
@@ -1,2 +1,2 @@
 /*! This file is auto-generated */
-!function(f,w){w.wp=w.wp||{},w.wp.heartbeat=new function(){var e,t,n,a,r=f(document),i={suspend:!1,suspendEnabled:!0,screenId:"",url:"",lastTick:0,queue:{},mainInterval:60,tempInterval:0,originalInterval:0,minimalInterval:0,countdown:0,connecting:!1,connectionError:!1,errorcount:0,hasConnected:!1,hasFocus:!0,userActivity:0,userActivityEvents:!1,checkFocusTimer:0,beatTimer:0};function o(){return(new Date).getTime()}function c(e){var t,n=e.src;if(!n||!/^https?:\/\//.test(n)||(t=w.location.origin||w.location.protocol+"//"+w.location.host,0===n.indexOf(t)))try{if(e.contentWindow.document)return 1}catch(e){}}function s(){i.hasFocus&&!document.hasFocus()?m():!i.hasFocus&&document.hasFocus()&&v()}function u(e,t){var n;if(e){switch(e){case"abort":break;case"timeout":n=!0;break;case"error":if(503===t&&i.hasConnected){n=!0;break}case"parsererror":case"empty":case"unknown":i.errorcount++,2<i.errorcount&&i.hasConnected&&(n=!0)}n&&!b()&&(i.connectionError=!0,r.trigger("heartbeat-connection-lost",[e,t]),wp.hooks.doAction("heartbeat.connection-lost",e,t))}}function l(){var e;i.connecting||i.suspend||(i.lastTick=o(),e=f.extend({},i.queue),i.queue={},r.trigger("heartbeat-send",[e]),wp.hooks.doAction("heartbeat.send",e),e={data:e,interval:i.tempInterval?i.tempInterval/1e3:i.mainInterval/1e3,_nonce:"object"==typeof w.heartbeatSettings?w.heartbeatSettings.nonce:"",action:"heartbeat",screen_id:i.screenId,has_focus:i.hasFocus},"customize"===i.screenId&&(e.wp_customize="on"),i.connecting=!0,i.xhr=f.ajax({url:i.url,type:"post",timeout:3e4,data:e,dataType:"json"}).always(function(){i.connecting=!1,d()}).done(function(e,t,n){var a;e?(i.hasConnected=!0,b()&&(i.errorcount=0,i.connectionError=!1,r.trigger("heartbeat-connection-restored"),wp.hooks.doAction("heartbeat.connection-restored")),e.nonces_expired&&(r.trigger("heartbeat-nonces-expired"),wp.hooks.doAction("heartbeat.nonces-expired")),e.heartbeat_interval&&(a=e.heartbeat_interval,delete e.heartbeat_interval),e.heartbeat_nonce&&"object"==typeof w.heartbeatSettings&&(w.heartbeatSettings.nonce=e.heartbeat_nonce,delete e.heartbeat_nonce),e.rest_nonce&&"object"==typeof w.wpApiSettings&&(w.wpApiSettings.nonce=e.rest_nonce),r.trigger("heartbeat-tick",[e,t,n]),wp.hooks.doAction("heartbeat.tick",e,t,n),a&&I(a)):u("empty")}).fail(function(e,t,n){u(t||"unknown",e.status),r.trigger("heartbeat-error",[e,t,n]),wp.hooks.doAction("heartbeat.error",e,t,n)}))}function d(){var e=o()-i.lastTick,t=i.mainInterval;i.suspend||(i.hasFocus?0<i.countdown&&i.tempInterval&&(t=i.tempInterval,i.countdown--,i.countdown<1&&(i.tempInterval=0)):t=12e4,i.minimalInterval&&t<i.minimalInterval&&(t=i.minimalInterval),w.clearTimeout(i.beatTimer),e<t?i.beatTimer=w.setTimeout(function(){l()},t-e):l())}function m(){i.hasFocus=!1}function v(){i.userActivity=o(),i.suspend=!1,i.hasFocus||(i.hasFocus=!0,d())}function h(){i.userActivityEvents=!1,r.off(".wp-heartbeat-active"),f("iframe").each(function(e,t){c(t)&&f(t.contentWindow).off(".wp-heartbeat-active")}),v()}function p(){var e=i.userActivity?o()-i.userActivity:0;3e5<e&&i.hasFocus&&m(),(i.suspendEnabled&&6e5<e||36e5<e)&&(i.suspend=!0),i.userActivityEvents||(r.on("mouseover.wp-heartbeat-active keyup.wp-heartbeat-active touchend.wp-heartbeat-active",function(){h()}),f("iframe").each(function(e,t){c(t)&&f(t.contentWindow).on("mouseover.wp-heartbeat-active keyup.wp-heartbeat-active touchend.wp-heartbeat-active",function(){h()})}),i.userActivityEvents=!0)}function b(){return i.connectionError}function I(e,t){var n,a=i.tempInterval||i.mainInterval;if(e){switch(e){case"fast":case 5:n=5e3;break;case 15:n=15e3;break;case 30:n=3e4;break;case 60:n=6e4;break;case 120:n=12e4;break;case"long-polling":return i.mainInterval=0;default:n=i.originalInterval}5e3===(n=i.minimalInterval&&n<i.minimalInterval?i.minimalInterval:n)?(t=parseInt(t,10)||30,i.countdown=t=t<1||30<t?30:t,i.tempInterval=n):(i.countdown=0,i.tempInterval=0,i.mainInterval=n),n!==a&&d()}return i.tempInterval?i.tempInterval/1e3:i.mainInterval/1e3}return"string"==typeof w.pagenow&&(i.screenId=w.pagenow),"string"==typeof w.ajaxurl&&(i.url=w.ajaxurl),"object"==typeof w.heartbeatSettings&&(e=w.heartbeatSettings,!i.url&&e.ajaxurl&&(i.url=e.ajaxurl),e.interval&&(i.mainInterval=e.interval,i.mainInterval<15?i.mainInterval=15:120<i.mainInterval&&(i.mainInterval=120)),e.minimalInterval&&(e.minimalInterval=parseInt(e.minimalInterval,10),i.minimalInterval=0<e.minimalInterval&&e.minimalInterval<=600?1e3*e.minimalInterval:0),i.minimalInterval&&i.mainInterval<i.minimalInterval&&(i.mainInterval=i.minimalInterval),i.screenId||(i.screenId=e.screenId||"front"),"disable"===e.suspension&&(i.suspendEnabled=!1)),i.mainInterval=1e3*i.mainInterval,i.originalInterval=i.mainInterval,void 0!==document.hidden?(t="hidden",a="visibilitychange",n="visibilityState"):void 0!==document.msHidden?(t="msHidden",a="msvisibilitychange",n="msVisibilityState"):void 0!==document.webkitHidden&&(t="webkitHidden",a="webkitvisibilitychange",n="webkitVisibilityState"),t&&(document[t]&&(i.hasFocus=!1),r.on(a+".wp-heartbeat",function(){"hidden"===document[n]?(m(),w.clearInterval(i.checkFocusTimer)):(v(),document.hasFocus&&(i.checkFocusTimer=w.setInterval(s,1e4)))})),document.hasFocus&&(i.checkFocusTimer=w.setInterval(s,1e4)),f(w).on("unload.wp-heartbeat",function(){i.suspend=!0,i.xhr&&4!==i.xhr.readyState&&i.xhr.abort()}),w.setInterval(p,3e4),f(function(){i.lastTick=o(),d()}),{hasFocus:function(){return i.hasFocus},connectNow:function(){i.lastTick=0,d()},disableSuspend:function(){i.suspendEnabled=!1},interval:I,hasConnectionError:b,enqueue:function(e,t,n){return!!e&&((!n||!this.isQueued(e))&&(i.queue[e]=t,!0))},dequeue:function(e){e&&delete i.queue[e]},isQueued:function(e){if(e)return i.queue.hasOwnProperty(e)},getQueuedItem:function(e){if(e)return this.isQueued(e)?i.queue[e]:void 0}}}}(jQuery,window);
\ No newline at end of file
+!function(f,w){w.wp=w.wp||{},w.wp.heartbeat=new function(){var e,t,n,a,i=f(document),r={suspend:!1,suspendEnabled:!0,screenId:"",url:"",lastTick:0,queue:{},mainInterval:60,tempInterval:0,originalInterval:0,minimalInterval:0,countdown:0,connecting:!1,connectionError:!1,errorcount:0,hasConnected:!1,hasFocus:!0,userActivity:0,userActivityEvents:!1,checkFocusTimer:0,beatTimer:0};function o(){return(new Date).getTime()}function c(e){var t,n=e.src;if(!n||!/^https?:\/\//.test(n)||(t=w.location.origin||w.location.protocol+"//"+w.location.host,0===n.indexOf(t)))try{if(e.contentWindow.document)return 1}catch(e){}}function s(){r.hasFocus&&!document.hasFocus()?d():!r.hasFocus&&document.hasFocus()&&v()}function u(e,t){var n;if(e){switch(e){case"abort":break;case"timeout":n=!0;break;case"error":if(503===t&&r.hasConnected){n=!0;break}case"parsererror":case"empty":case"unknown":r.errorcount++,2<r.errorcount&&r.hasConnected&&(n=!0)}n&&!b()&&(r.connectionError=!0,i.trigger("heartbeat-connection-lost",[e,t]),wp.hooks.doAction("heartbeat.connection-lost",e,t))}}function l(){var e;r.connecting||r.suspend||(r.lastTick=o(),e=f.extend({},r.queue),r.queue={},i.trigger("heartbeat-send",[e]),wp.hooks.doAction("heartbeat.send",e),e={data:e,interval:r.tempInterval?r.tempInterval/1e3:r.mainInterval/1e3,_nonce:"object"==typeof w.heartbeatSettings?w.heartbeatSettings.nonce:"",action:"heartbeat",screen_id:r.screenId,has_focus:r.hasFocus},"customize"===r.screenId&&(e.wp_customize="on"),r.connecting=!0,r.xhr=f.ajax({url:r.url,type:"post",timeout:3e4,data:e,dataType:"json"}).always(function(){r.connecting=!1,m()}).done(function(e,t,n){var a;e?(r.hasConnected=!0,b()&&(r.errorcount=0,r.connectionError=!1,i.trigger("heartbeat-connection-restored"),wp.hooks.doAction("heartbeat.connection-restored")),e.nonces_expired&&(i.trigger("heartbeat-nonces-expired"),wp.hooks.doAction("heartbeat.nonces-expired")),e.heartbeat_interval&&(a=e.heartbeat_interval,delete e.heartbeat_interval),e.heartbeat_nonce&&"object"==typeof w.heartbeatSettings&&(w.heartbeatSettings.nonce=e.heartbeat_nonce,delete e.heartbeat_nonce),e.rest_nonce&&"object"==typeof w.wpApiSettings&&(w.wpApiSettings.nonce=e.rest_nonce),i.trigger("heartbeat-tick",[e,t,n]),wp.hooks.doAction("heartbeat.tick",e,t,n),a&&I(a)):u("empty")}).fail(function(e,t,n){u(t||"unknown",e.status),i.trigger("heartbeat-error",[e,t,n]),wp.hooks.doAction("heartbeat.error",e,t,n)}))}function m(){var e=o()-r.lastTick,t=r.mainInterval;r.suspend||(r.hasFocus?0<r.countdown&&r.tempInterval&&(t=r.tempInterval,r.countdown--,r.countdown<1&&(r.tempInterval=0)):t=12e4,r.minimalInterval&&t<r.minimalInterval&&(t=r.minimalInterval),w.clearTimeout(r.beatTimer),e<t?r.beatTimer=w.setTimeout(function(){l()},t-e):l())}function d(){r.hasFocus=!1}function v(){r.userActivity=o(),r.suspend=!1,r.hasFocus||(r.hasFocus=!0,m())}function h(){r.userActivityEvents=!1,i.off(".wp-heartbeat-active"),f("iframe").each(function(e,t){c(t)&&f(t.contentWindow).off(".wp-heartbeat-active")}),v()}function p(){var e=r.userActivity?o()-r.userActivity:0;3e5<e&&r.hasFocus&&d(),(r.suspendEnabled&&6e5<e||36e5<e)&&(r.suspend=!0),r.userActivityEvents||(i.on("mouseover.wp-heartbeat-active keyup.wp-heartbeat-active touchend.wp-heartbeat-active",function(){h()}),f("iframe").each(function(e,t){c(t)&&f(t.contentWindow).on("mouseover.wp-heartbeat-active keyup.wp-heartbeat-active touchend.wp-heartbeat-active",function(){h()})}),r.userActivityEvents=!0)}function b(){return r.connectionError}function I(e,t){var n,a=r.tempInterval||r.mainInterval;if(e){switch(e){case"fast":case 5:n=5e3;break;case 15:n=15e3;break;case 30:n=3e4;break;case 60:n=6e4;break;case 120:n=12e4;break;case"long-polling":return r.mainInterval=0;default:n=r.originalInterval}5e3===(n=r.minimalInterval&&n<r.minimalInterval?r.minimalInterval:n)?(t=parseInt(t,10)||30,r.countdown=t=t<1||30<t?30:t,r.tempInterval=n):(r.countdown=0,r.tempInterval=0,r.mainInterval=n),n!==a&&m()}return r.tempInterval?r.tempInterval/1e3:r.mainInterval/1e3}return"string"==typeof w.pagenow&&(r.screenId=w.pagenow),"string"==typeof w.ajaxurl&&(r.url=w.ajaxurl),"object"==typeof w.heartbeatSettings&&(e=w.heartbeatSettings,!r.url&&e.ajaxurl&&(r.url=e.ajaxurl),e.interval&&(r.mainInterval=e.interval,r.mainInterval<15?r.mainInterval=15:120<r.mainInterval&&(r.mainInterval=120)),e.minimalInterval&&(e.minimalInterval=parseInt(e.minimalInterval,10),r.minimalInterval=0<e.minimalInterval&&e.minimalInterval<=600?e.minimalInterval:0),r.minimalInterval&&r.mainInterval<r.minimalInterval&&(r.mainInterval=r.minimalInterval),r.screenId||(r.screenId=e.screenId||"front"),"disable"===e.suspension&&(r.suspendEnabled=!1)),r.mainInterval=1e3*r.mainInterval,r.originalInterval=r.mainInterval,r.minimalInterval&&(r.minimalInterval=1e3*r.minimalInterval),void 0!==document.hidden?(t="hidden",a="visibilitychange",n="visibilityState"):void 0!==document.msHidden?(t="msHidden",a="msvisibilitychange",n="msVisibilityState"):void 0!==document.webkitHidden&&(t="webkitHidden",a="webkitvisibilitychange",n="webkitVisibilityState"),t&&(document[t]&&(r.hasFocus=!1),i.on(a+".wp-heartbeat",function(){"hidden"===document[n]?(d(),w.clearInterval(r.checkFocusTimer)):(v(),document.hasFocus&&(r.checkFocusTimer=w.setInterval(s,1e4)))})),document.hasFocus&&(r.checkFocusTimer=w.setInterval(s,1e4)),f(w).on("unload.wp-heartbeat",function(){r.suspend=!0,r.xhr&&4!==r.xhr.readyState&&r.xhr.abort()}),w.setInterval(p,3e4),f(function(){r.lastTick=o(),m()}),{hasFocus:function(){return r.hasFocus},connectNow:function(){r.lastTick=0,m()},disableSuspend:function(){r.suspendEnabled=!1},interval:I,hasConnectionError:b,enqueue:function(e,t,n){return!!e&&((!n||!this.isQueued(e))&&(r.queue[e]=t,!0))},dequeue:function(e){e&&delete r.queue[e]},isQueued:function(e){if(e)return r.queue.hasOwnProperty(e)},getQueuedItem:function(e){if(e)return this.isQueued(e)?r.queue[e]:void 0}}}}(jQuery,window);
\ No newline at end of file
diff --git a/wp-includes/version.php b/wp-includes/version.php
index c47b795fd2..881049107e 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.0-beta2-53225';
+$wp_version = '6.0-beta2-53226';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.