open System settings>Keyboard>Shortcuts
Add new dummy command (for example 'cd .') and press attach AltGr key (alternatively named as 'Right Alt' or 'Level3 Shift') to it.
After that I even deleted this dummy command from shortcuts list and the bug did not reappers.
UPDATE!
Seems the bug is gone after this workaround:
open System settings> Keyboard> Shortcuts
Add new dummy command (for example 'cd .') and press attach AltGr key (alternatively named as 'Right Alt' or 'Level3 Shift') to it.
After that I even deleted this dummy command from shortcuts list and the bug did not reappers.