Ticket #29338: 29338.7.patch

src/wp-admin/js/editor-expand.js

@@ -31 +31 @@
                 fixedSideBottom = false,
                 scrollTimer,
                 lastScrollPosition = 0,
+                visualEditorScrollPosition = 0,
+                textEditorScrollPosition = 0,
                 pageYOffsetAtTop = 130,
                 pinnedToolsTop = 56,
                 sidebarBottom = 20,
@@ -216 +218 @@
 
                 // Adjust when switching editor modes.
                 function mceShow() {
+                        textEditorScrollPosition = window.pageYOffset;
+
                         setTimeout( function() {
+                                var top = $contentWrap.offset().top;
+
+                                if ( window.pageYOffset > top ) {
+                                        window.scrollTo( window.pageXOffset, visualEditorScrollPosition ? visualEditorScrollPosition : top - heights.adminBarHeight );
+                                }
+
                                 editor.execCommand( 'wpAutoResize' );
                                 adjust();
                         }, 300 );
+
+                        adjust();
                 }
 
                 function mceHide() {
-                        var wrapHeight = $( '#wpwrap' ).height();
+                        visualEditorScrollPosition = window.pageYOffset;
 
-                        textEditorResize();
+                        setTimeout( function() {
+                                var top = $contentWrap.offset().top;
 
-                        if ( wrapHeight && $window.scrollTop() > wrapHeight ) {
-                                window.scrollTo( window.pageXOffset, wrapHeight - 1 );
-                        }
+                                if ( window.pageYOffset > top ) {
+                                        window.scrollTo( window.pageXOffset, textEditorScrollPosition ? textEditorScrollPosition : top - heights.adminBarHeight );
+                                }
+
+                                textEditorResize();
+                                adjust();
+                        }, 100 );
 
                         adjust();
                 }