I was in the main menu chatting on the global chat.
When I pressed Shift+TAB to check what my friends were playing the Global chat Box disappeared but the chat was still there and new messages were coming:
Then I pressed Shift+TAB again and even the chat disappeared, new messages were not coming:
Then I pressed Shift+TAB again and the chat came back (without the box) and new messages were coming:
Whenever I Shift+TAB, the chat appears (without the box) and then disappears. This keeps happening infinetly.