ExtJS 4.2.0 Grid: Highlighting issues when selecting several rows in the grid

Using Ctrl+left mouse click to select multiple rows in the grid, only the last selected row is highlighted in the grid view. The selModel is set to 'MULTI'.

this.getGrid().getSelectionModel().getSelection() does contain all the selected records, but not all are highlighted except the last selected one. Has anyone run into the same problem? Do you have any suggestions or workaround?

Same code worked previously with ExtJS 4.0.7.

ExtJS 4.2.0 Grid: Highlighting issues when selecting several rows in the grid