Switching between layouts while a key is down doesn't work with XWayland apps.

This bug is reported upstream, see here for details: https://gitlab.freedesktop.org/xorg/xserver/-/issues/856 .

It seems the bug is fixed upstream.

This bug is very serious, it seriously affects user expirence for people who use multiple layouts.

It should definitely be fixed in Debian before Trixie release, otherwise Trixie will be dead-on-arrival.

So, please, make sure that upstream patch will be present in Trixie on Trixie release