After a recent update, the Zoho mail app has an annoying bug whereby  the list of Keyboard shortcuts pops up every time one types a question mark (?) character.

How do we turn this off please?  On a standard US keyboard (in common use where I live in Australia), the question mark is typed by pressing Shift and "/"  which happens to be the same combination to show the Keyboard shortcut list... which cannot be changed.

It's quite annoying to have one's train of thought derailed by this feature.  I've tried turning off Keyboard Shortcuts, but the switch doesn't appear to actually do anything.