Comment 4 for bug 567563

Yesterday it happend to me for the "Text->Pun on Path" menu entry. The menu entry was stil usable by keyboard (highilighting the "Remove from Path" entry with the mouse, then crsr-up and enter). Some days ago it happened for the "Make selected segments lines" menu-bar button. In both cases, restarting Inkscape solved the issue.
Yesterday I'd been heavily using the put-on-path operation (I was thinking about associating a shortcut) before the lock, the other day I think I had never used the "make-line" button before realizing it was unavailable.