Bug LINUX. Manually locating Unity Editor not working.

The problem is quite simple, yet extremely frustrating: when I try to add an Editor y previously downloaded from the Unity Archive, it won't be properly added to the list, and I won't even be able to use it. Say the directory structure where the editor is located is as such:

• My stuff/
  • Editor/ (this was decompressed from the tarball)
    • (Editor files including Unity executable)
  • Unity.tar.xz

When I use the Locate function in UnityHub, I select the executable inside the Editor folder, and a new install is added to the list, called "My stuff", no version number, and a tag that says "Linux" bellow the name, I suppose that's where the Editor's target platforms are supposed to be. Please help and thanks in advance!