Success! Looks like we've fixed this one. According to our records the fix was applied for
a recent build.
Expand category fails sometimes after collapse all
Start a new Ext JS 4 project. Collapse all categories in the Toolbox. Try to expand Menu. It does not expand.
Most categories appear to work fine. I've only noticed this with Grid View, Menu, and Toolbar. Strangely, these cateogories seem to toggle just fine until the collapse all is selected.
This will be fixed in the next release (after build 276).