[BUG] Switcher won't confirm selection with non-standard shortcut about advanced-alttab-window-switcher

[G-dH]

There is a conflict with Search Mode as Default option, but when it's disabled it should work as you expect, and it works for me on GS 42.5 and also 43.2 and 44.beta. Only if you use shortcut to activate search input, then you can release the modifier key without closing the popup. Execute following command in the terminal, then use the switcher and check if there's any relevant output that can help with debugging.
journalctl /usr/bin/gnome-shell -fo cat

[notpeelz]

It happens even with Search Mode as Default disabled.
Actually, I just realized I have my caps lock key remapped to hyper (not super):

gsettings set org.gnome.desktop.input-sources xkb-options "['caps:hyper']"
gsettings set org.gnome.desktop.wm.keybindings switch-windows "['<Hyper>q']"

The problem occurs when caps+q is pressed. super+q works as expected.

[G-dH]

Fixed, hopefully without collateral damage :) Available in the repository.

[notpeelz]

Thanks. That did the trick :)