Comment 1 for bug 1643254

This affects all hard-coded keyboard shortcuts defined for any commands which are represented with a button on any tool controls bar, not just the mesh tool (see bug #1639740).

I do not know why this was filed specifically for mesh tool (check for example the buttons on the node tool controls bar: no tooltips for available shortcuts either) - proposing to link as duplicate to bug #1639740.

Note: the tooltip for the tool icon in the toolbox on the left does show the keyboard shortcut as expected once the user has defined a custom one (e.g. 'Shift+M' or 'Alt+M') - there is no predefined default keyboard shortcut yet for the mesh tool in 'share/keys/default.xml'.