Duplicated Git history when using Jetbrains IDEA (other JB editors possibly affected)

After installing Jetbrains Toolbox from ujust setup-jetbrains-toolbox, and installing IDEA, there's two IDEAs in the Toolbox list, both of which "link" to the same one. Also when having any project with GIt open, it will detect another local branch within the same project, duplicating all commits of your actual branch. The first branch is at /(project path), and the next branch is at /var/(project path).