Number two at least is a feature, not a bug. That exists so that if you're trying to use your UV space efficiently by stacking similar/identical bits of lowpoly model on top of each other, the program doesn't unstack them and pack them individually.
Just tried the demo. First time importing a mesh crashed it (my fault kinda, because I accidentally exported the whole scene instead of just the lowpoly). Second time worked like a charm. Result was way better than the packer that comes with blender. Save function is greyed out, but I guess that's a demo limitation (didn't…
Short update IPackthat finaly left early access :) Tom Giardino from valve helped me through it ^^ Currently setting up gumroad and nearly finished. Need to cross check the server validation to finish the task. All buyers who bought IPackthat during early access also received the commercial upgrade already. Short roadmap…