[2022] Keybinding issue

Since the last update of Rainbow Six: Siege binding an action to í key of a Hungarian keyboard (í key is under 'a' between shift and 'y') is not working.
In previous versions binding the í key to an action caused the Customize controls screen to glitch and freeze if it was opened a second time, so í key had to be bound last, but at least it was working in-game. Now when I try to set the key it shows '???' but when I press the key in-game it doesn't work at all.

I tried to submit a support ticket, but this really friendly message is on the Ubi support page:
"In the light of the current situation, we are temporarily restricting our support to live chat only.
* Chat is currently unavailable. Please choose another support method."

Customer service in 2022...