It used to be the case that using Ctrl + ; (semi-colon) (specifically but not limited to) Google Sheets would insert the current date in a cell (assuming the cell format is set to do so) but just recently, I have noted that this shortcut produces an underlined e char and pressing space adds an additional context menu. Pressing Enter removes the character and control to the cell is restored after another keypress or by pressing Esc.
This is not specific to Google Sheets and is thus posted here. It also occurs in terminal with the same behaviour and in other apps across the spectrum.
Nor is it specific to my PC in isolation. I tried this on my 20.04 instance and it performed correctly. I also tried it on another 22.04 instance (with the same keyboard layout but a different keyboard) and experienced the same issue so it appears to be a feature of 22.04.2 with Gnome 42.5 and 5.19.0-41-generic Kernel on both 22.04 instances.
I'd appreciate any guidance on how to resolve this issue. It's not super serious as manually inputting the date in Sheets and using the semi-colon on its own elsewhere works fine but it seems something has changed along the way.