Zoom is blocking AltGr + U in Chat input window

[benhe]

When focussed in the chat line, i cannot press AltGr + U for the letter "ü" with the EurKey Layout.

Zoom overwrites the Hotkey, but it is not to be found in the settings to disable it.

When pressed outside of zoom or with another element in zoom focussed (chat window, search bar) 

the hotkey is working fine. Just when the chat input line is focussed, Zoom overwrites the windows keyboard layout.