GNUMERIC has canvas errors, then refuses keyboard input
After some use, I see errors:
** (gnumeric:8361): CRITICAL **: goc_canvas_grab_item: assertion 'GOC_IS_CANVAS (canvas) && canvas->grabbed_item == NULL' failed
** (gnumeric:8361): CRITICAL **: goc_item_ungrab: assertion 'item == goc_canvas_get_grabbed_item (item->canvas)' failed
** (gnumeric:8361): CRITICAL **: goc_canvas_grab_item: assertion 'GOC_IS_CANVAS (canvas) && canvas->grabbed_item == NULL' failed
and then I can no longer move around the spreadsheet with cursors, or start typing in a cell with keyboard. I must double click to edit the cell. Saving, exiting and restarting works until whatever I do hits this error again. I use vtwm with focus follows mouse, which may relevant to the stateful nature of some of the dialogues.