In fact there are 3 solutions of this problem.
Alt functionality, Windows up/down errow and restarting your screen reader whatever screen reader you are using!
With regards from Inamuddin with the Skype ID:
Sent from Mail for Windows 10
Hi guys, I just tested the alt functionality that Stephen suggested in
order to fix the problems with Skype. Basically it works just fine,
beware though that you'll open the menu bar, so you should press it once
again or esc to close it and go back to the Skype main window.
Inviato da Thunderbird su Windows 10