I’m sorry, but I’m not the only one that’s having this issue; When I originally checked for an existing thread back in 2018 I found several in the support section. Not that I expect it to be a high priority, but I think it’s a bit silly to not support an input method that’s native to the game. It exists for a reason and people do use it. Also, when since is FiveM open source? If the repository is open to pull requests I might see if I can hire someone to take a look at the issue.
Edit:
I need to stop believing everything I hear. Some fool told me that FiveM was closed source; Yet I just found the GitHub repo. I’ll have to see if I can find a friend who knows enough code to fix it.