Thanks for your report.
This is an upstream GNOME matter, and should better be discussed there. OTOH, it looks like the discussion has already started.
https://gitlab.gnome.org/GNOME/gnome-control-center/-/issues/1222
So possibly in GNOME 40 (Ubuntu 21.10).
However, in the meantime you can use another mechanism for setting input source shortcuts. It's available in Tweaks (you need to install gnome-tweaks) and allows several combinations which can currently not be selected via Settings.
Thanks for your report.
This is an upstream GNOME matter, and should better be discussed there. OTOH, it looks like the discussion has already started.
https:/ /gitlab. gnome.org/ GNOME/gnome- control- center/ -/issues/ 1222
So possibly in GNOME 40 (Ubuntu 21.10).
However, in the meantime you can use another mechanism for setting input source shortcuts. It's available in Tweaks (you need to install gnome-tweaks) and allows several combinations which can currently not be selected via Settings.