I have these two problems on two machines as well (both after upgrading to 16.10). One machine exhibits *just* the two symptoms you describe, while another also has an odd bug making the numeric/formula entry text box transparent (see attached).
Interestingly (/frustratingly, confusingly), the menu and transparency issues are not present when running a guest session on that machine, but the menu remains an issue in the guest session on the other machine.
I have these two problems on two machines as well (both after upgrading to 16.10). One machine exhibits *just* the two symptoms you describe, while another also has an odd bug making the numeric/formula entry text box transparent (see attached).
Interestingly (/frustratingly, confusingly), the menu and transparency issues are not present when running a guest session on that machine, but the menu remains an issue in the guest session on the other machine.