I deleted my version and tried it with the official version and am still having the same problems. And, a far as I can tell, I have no sandboxing features enabled. Let me elaborate on my problems:
When I click "x" to close Adobe Reader when it is in a group, it closes all other tabs in the group.
When I have a maximized window on my second monitor (portrait orientation), the tab bars to switch between apps don't work after clicking on Adobe.
Adobe won't open from a saved group.