I saw a bit of posts here that talked about it but i'm going to explain it a little more.
Once you bind a key to Left Mouse Button (LMB), your game becomes unplayable, because instead of clicking anywhere, it just does the binding.
Trying to fix it I went into the config.json file and removed everything that was related to the LMB but unfortunately didnt work, I then uninstalled fully eclipse and reinstalled it, didnt fix it, I uninstalled geode and reinstalled it, didnt fix it, I then uninstalled geometry dash fully and reinstalled it, still nothing.
When I look into the logs of that session nothing weird shows up, when I look into the config, its telling me I do not have any bindings even tho something is binded to the LMB.
I dont really use keybinds so not a big problem for me but for users that use them everyday, it is a big issue, it removes a total section and option of the menu and its not fixable as far as I could see.
PS: Oh and most important part that I totally forgot like an idiot, once you binded something to the LMB, you cant bind anything else to another button, only LMB is bindable