diff -r 3d4e9c994f10 -r a86126ab1dd4 wp/wp-includes/js/tinymce/plugins/wpautoresize/plugin.js
--- a/wp/wp-includes/js/tinymce/plugins/wpautoresize/plugin.js	Tue Oct 22 16:11:46 2019 +0200
+++ b/wp/wp-includes/js/tinymce/plugins/wpautoresize/plugin.js	Tue Dec 15 13:49:49 2020 +0100
@@ -61,13 +61,13 @@
 		if ( ! body || ( e && e.type === 'setcontent' && e.initial ) || isFullscreen() ) {
 			if ( body && docElm ) {
 				body.style.overflowY = 'auto';
-				docElm.style.overflowY = 'auto'; // Old IE
+				docElm.style.overflowY = 'auto'; // Old IE.
 			}
 
 			return;
 		}
 
-		// Calculate outer height of the body element using CSS styles
+		// Calculate outer height of the body element using CSS styles.
 		marginTop = editor.dom.getStyle( body, 'margin-top', true );
 		marginBottom = editor.dom.getStyle( body, 'margin-bottom', true );
 		paddingTop = editor.dom.getStyle( body, 'padding-top', true );
@@ -83,36 +83,36 @@
 			myHeight = docElm.offsetHeight;
 		}
 
-		// Make sure we have a valid height
+		// Make sure we have a valid height.
 		if ( isNaN( myHeight ) || myHeight <= 0 ) {
-			// Get height differently depending on the browser used
+			// Get height differently depending on the browser used.
 			myHeight = tinymce.Env.ie ? body.scrollHeight : ( tinymce.Env.webkit && body.clientHeight === 0 ? 0 : body.offsetHeight );
 		}
 
-		// Don't make it smaller than the minimum height
+		// Don't make it smaller than the minimum height.
 		if ( myHeight > settings.autoresize_min_height ) {
 			resizeHeight = myHeight;
 		}
 
-		// If a maximum height has been defined don't exceed this height
+		// If a maximum height has been defined don't exceed this height.
 		if ( settings.autoresize_max_height && myHeight > settings.autoresize_max_height ) {
 			resizeHeight = settings.autoresize_max_height;
 			body.style.overflowY = 'auto';
-			docElm.style.overflowY = 'auto'; // Old IE
+			docElm.style.overflowY = 'auto'; // Old IE.
 		} else {
 			body.style.overflowY = 'hidden';
-			docElm.style.overflowY = 'hidden'; // Old IE
+			docElm.style.overflowY = 'hidden'; // Old IE.
 			body.scrollTop = 0;
 		}
 
-		// Resize content element
+		// Resize content element.
 		if (resizeHeight !== oldSize) {
 			deltaSize = resizeHeight - oldSize;
 			DOM.setStyle( editor.iframeElement, 'height', resizeHeight + 'px' );
 			oldSize = resizeHeight;
 
-			// WebKit doesn't decrease the size of the body element until the iframe gets resized
-			// So we need to continue to resize the iframe down until the size gets fixed
+			// WebKit doesn't decrease the size of the body element until the iframe gets resized.
+			// So we need to continue to resize the iframe down until the size gets fixed.
 			if ( tinymce.isWebKit && deltaSize < 0 ) {
 				resize( e );
 			}
@@ -137,17 +137,17 @@
 		}, interval );
 	}
 
-	// Define minimum height
+	// Define minimum height.
 	settings.autoresize_min_height = parseInt(editor.getParam( 'autoresize_min_height', editor.getElement().offsetHeight), 10 );
 
-	// Define maximum height
+	// Define maximum height.
 	settings.autoresize_max_height = parseInt(editor.getParam( 'autoresize_max_height', 0), 10 );
 
 	function on() {
 		if ( ! editor.dom.hasClass( editor.getBody(), 'wp-autoresize' ) ) {
 			isActive = true;
 			editor.dom.addClass( editor.getBody(), 'wp-autoresize' );
-			// Add appropriate listeners for resizing the content area
+			// Add appropriate listeners for resizing the content area.
 			editor.on( 'nodechange setcontent keyup FullscreenStateChanged', resize );
 			resize();
 		}
@@ -156,20 +156,20 @@
 	function off() {
 		var doc;
 
-		// Don't turn off if the setting is 'on'
+		// Don't turn off if the setting is 'on'.
 		if ( ! settings.wp_autoresize_on ) {
 			isActive = false;
 			doc = editor.getDoc();
 			editor.dom.removeClass( editor.getBody(), 'wp-autoresize' );
 			editor.off( 'nodechange setcontent keyup FullscreenStateChanged', resize );
 			doc.body.style.overflowY = 'auto';
-			doc.documentElement.style.overflowY = 'auto'; // Old IE
+			doc.documentElement.style.overflowY = 'auto'; // Old IE.
 			oldSize = 0;
 		}
 	}
 
 	if ( settings.wp_autoresize_on ) {
-		// Turn resizing on when the editor loads
+		// Turn resizing on when the editor loads.
 		isActive = true;
 
 		editor.on( 'init', function() {
@@ -184,24 +184,24 @@
 
 		if ( editor.getParam( 'autoresize_on_init', true ) ) {
 			editor.on( 'init', function() {
-				// Hit it 10 times in 200 ms intervals
+				// Hit it 10 times in 200 ms intervals.
 				wait( 10, 200, function() {
-					// Hit it 5 times in 1 sec intervals
+					// Hit it 5 times in 1 sec intervals.
 					wait( 5, 1000 );
 				});
 			});
 		}
 	}
 
-	// Reset the stored size
+	// Reset the stored size.
 	editor.on( 'show', function() {
 		oldSize = 0;
 	});
 
-	// Register the command
+	// Register the command.
 	editor.addCommand( 'wpAutoResize', resize );
 
-	// On/off
+	// On/off.
 	editor.addCommand( 'wpAutoResizeOn', on );
 	editor.addCommand( 'wpAutoResizeOff', off );
 });