action.setToolTip doesn't seem to have any effect. Reproduce: 1. observe use of setToolTip in prepackaged tenbrushes script: action.setToolTip("Assign ten brush presets to ten shortcuts.") 2. run krita 3. No tooltip pop up for action (ie menu item).
Ah, I didn't read the report correctly: menu items never show a tooltip. But if you put the ten brushes action in the toolbar, and hover over it, it does show the tooltip.