Proxyfox

I'm playing on PC through steam and every time I join my friend's game the progress I had made previously is wiped. My items are gone, my mutation progress is reset, and I load in at the beginning with no items. I believe this was an issue back in the previous patch for some people but thought it had been fixed. The loss of the mutation progress is particularly disheartening as any progress I've made is wiped when I log. Anyone else experiencing this or know of a fix?