Bug#1070745: Bug on Debian 12 Bookworm - Gnome-Shell / After today's upgrade, the dead keys on my keyboard no longer work

[pham...@bluewin.ch]

Post Scriptum
I use Swiss French/German/Italian keyboard.
We have a unique keyboard for these 3 languages.
I have tested all existing keyboard profiles without success. They all pose 
this problem.
If I enter for exemple : être 
The result displayed is : tre
The keyboard option without dead keys works but is unusable on a daily basis.
Regards.