@bender-tags: 4.11.2, bug, 2546
@bender-ckeditor-plugins: wysiwygarea, toolbar, undo, find
@bender-ui: collapsed

## For both editors:

1. Focus toolbar with <kbd>Alt+F10</kbd>.
1. Use arrow keys to navigate in toolbar.

## Unexpected:

When last button in group is focused separator next to it flickers.
