Malkavi;
See Larian_QA's post above. The game was tested with the zombie talent; the problem was something missing from the patch. I don't know if that was also the case with the HP bug, but would think it would have to be that, something added/changed at the last minute or a problem when creating the patch.


fxluk;
Why do you assume the co-op dialogue is an easy fix?
It should be implemented soon. Apparently it took longer than expected, and didn't make it into this update, or this update took longer than expected, and that delayed the co-op dialogue update.