Comment 2 for bug 1885749

Thanks for your report.

The conflict you point at is unfortunate. Nevertheless, removing those shortcuts is not an option. Especially Ctrl+Shift+u is a well established method on Linux to type characters which are not available via the keyboard layout you are using:

https://help.ubuntu.com/stable/ubuntu-help/tips-specialchars.html#ctrlshiftu

Ctrl+Shift+e is newer, but probably used and appreciated by many users.

Your bug makes me think of this IBus issue:

https://github.com/ibus/ibus/issues/2163

That proved to be an Ubuntu specific bug which has been fixed in groovy but not (yet) in focal. Fixing it in focal would be a way to improve the situation. If you want that to happen, please file an ibus bug as I suggested in my latest comment at that issue.

I think you make a too big deal of the fact that ibus-setup is not searchable in Ubuntu. It's not an Ubuntu specific thing, btw, but it's the same for GNOME irrespective of distro:

https://github.com/ibus/ibus/commit/66141bbc

Alt+F2 followed by ibus-setup is not "extremely difficult". But indeed, you need be aware of the possibility to change it that way.