Incorrect Control/CapsLock detection on X11 when swapped

[fintmc]

After running the following command on X11: setxkbmap -layout us -option ctrl:swapcaps, the keyboard layout's Ctrl and Caps Lock key would be swapped by X11.
In any other app this works fine, in osu!, however, the now Caps Lock key isn't detected as Ctrl (but detected correctly by the rest of the system). This incorrectly summons the beatmaps menu on Ctrl+B (in this keymap, CapsLock+B) and makes pasting with Ctrl+V (CapsLock+V) impossible.

As well as that, the login screen's password field caps lock icon is only updated after pressing the physical CapsLock (between tab and shift) and syncs with the system's Caps Lock state, modified by physical Ctrl (left bottom-most key)

I am pretty sure this is an issue with the game itself but to be sure I will open a discussion here first.