Ticket #45461: 45461.diff

src/js/_enqueues/vendor/tinymce/plugins/wordpress/plugin.js

@@ -19 +19 @@
         }
 
         function toggleToolbars( state ) {
-                var initial, toolbars,
+                var initial, toolbars, iframeHeight,
                         pixels = 0,
                         classicBlockToolbar = tinymce.$( '.block-library-classic__toolbar' );
 
@@ -44 +44 @@
                                 if ( i > 0 ) {
                                         if ( state === 'hide' ) {
                                                 toolbar.hide();
-                                                pixels += 30;
+                                                pixels += 34;
                                         } else {
                                                 toolbar.show();
-                                                pixels -= 30;
+                                                pixels -= 34;
                                         }
                                 }
                         });
@@ -54 +54 @@
                 }
 
                 // Resize editor iframe, not needed for iOS and inline instances.
-                if ( pixels && ! tinymce.Env.iOS && editor.iframeElement ) {
-                        DOM.setStyle( editor.iframeElement, 'height', editor.iframeElement.clientHeight + pixels );
+                // Don't resize if the editor is in a hidden container.
+                if ( pixels && ! tinymce.Env.iOS && editor.iframeElement && editor.iframeElement.clientHeight ) {
+                        iframeHeight = editor.iframeElement.clientHeight + pixels;
+
+                        // Keep min-height.
+                        if ( iframeHeight > 50  ) {
+                                DOM.setStyle( editor.iframeElement, 'height', iframeHeight );
+                        }
                 }
 
                 if ( ! initial ) {