problem with keybindings

[silverhikari]

OS: Linux/Manjaro
GOG edition
version: tested git and release

i am using the sdl2 version with vfs and glm enabled. i have made sure to copy the altered files from the repo to the game. when playing the game i noticed only the left mouse button works. when i went to check the setting in the option menu inside of the game, it appears all of the key configs are set to '0' and trying to set them to keys will make the option reset to 0. though it appears some settings are working as changing the resolution and turning on some settings such as subtitles will persist when the game is relaunched. i frist noticed this problem when trying to use the sing ability with it not enabling.

EDIT: it seems to work when selecting keyboard keys but when trying to assign to the mouse it will still result in a 0