Bug Hub broken for ages with multi-drive installs

Not sure how you even report bugs for the hub but it should have an in built tool to do so.

If you have installations on different drives then the hub is just buggy and has been so for some time.

It easily loses track of installs. I went to settings and changed the drive for new installs and went to add a new version, but oh it had now forgotten about the last install on the other drive now - only had eyes for the new path set and any projects did not know what to do now if set to the now-lost Unity installation (still on disk).

Please do testing on multi-drive configs!