Baiscally it seems that every keybind that this mod uses can't be used for anything else or it wont work. Like dismout keybind that disables Combat Roll default keybind and if set to same as sneak it stops working too. I'm running Fabric 1.21.1.

Yes, that's vanilla behavior. I tried to fix it with a custom keybind system (useCustomKeybindSystem in the config, default true) but many controller or keybind mods overwrite this behaviour.