Ticket #3475: 3475.patch

_source/plugins/styles/plugin.js

@@ -1029 +1029 @@
 
         function applyStyle( document, remove )
         {
-                // Get all ranges from the selection.
-                var selection = document.getSelection();
-                var ranges = selection.getRanges();
+                // Creating bookmarks here, since the range might be
+                // mangled during processing.
+                var selection = document.getSelection(),
+                        ranges = selection.getRanges(),
+                        bookmarks = selection.createBookmarks();
                 var func = remove ? this.removeFromRange : this.applyToRange;
 
-                // Apply the style to the ranges.
-                for ( var i = 0 ; i < ranges.length ; i++ )
+                // Apply the style to the ranges in reverse order to avoid
+                // range changes could impact on others. (#3475)
+                for ( var i = ranges.length - 1 ; i >= 0 ; i-- )
                         func.call( this, ranges[ i ] );
 
-                // Select the ranges again.
-                selection.selectRanges( ranges );
+                selection.selectBookmarks( bookmarks );
         }
 })();