see attachment Reproducible: Always Steps to Reproduce: change the "Application Launcher" to "Application Dashboard" $ kill plasmashell $ LANG=he plasmashell --reverse (LANG HE is IMPORTENT $ open Application dashboard and move the mouse on the menu
Created attachment 101043 [details] the problem
Confirmed. I tried adding LayoutMirroring to the dashboard once but the highlight of the category behaved weirdly then.
*** This bug has been marked as a duplicate of bug 364778 ***