Not sure if anyone has made a thread on this bug, though I know other people have had an issue with it. Just logging in anywhere around the Mojave, doesn't really matter where and having your level reduced to 1. It's happened to 3-4 that I know off the top of my head, it doesn't seem to be triggered by anything at all. Regardless of the amount players near me when I'm logging in, be it in goodsprings or in the wasteland. The only thing it seems to do is wipe your levels, special point investment but leaves yours skills. Might be different for others. It's happened to me four times now.