Can "ALT + CTRL + END" be added as a key combination to send.
It's the RDP equivilent of "ALT + CTRL + DEL" which is useful in nested Mesh, RDP sessions.
Right click on the keyboard shortcut drop down and hit "Customize". You should be able to add the combination you want. Let me know if that works.

I didn't know customize was there. I found an old bug #359 which is similar but it was still open.
Thank you
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Right click on the keyboard shortcut drop down and hit "Customize". You should be able to add the combination you want. Let me know if that works.