In Mann Vs. Machine, if you join a new lobby while being revived by a medic, the "Being revived" box will remain upon entering the new lobby. This causes the mouse to be unlocked and doesn't allow you to move your camera. The box cannot be closed either.

Here is a video of the bug.

• record fix;stop does not fix the issue.
• Being revived a second time in the new lobby does not fix the issue. (not shown in video)
• Using showmapinfo (which is i by default) causes the game to be locked up even further, making it impossible to open the console or go any other menus, such as class selection, the main menu, and the backpack. It should be noted that it is still possible to view the scoreboard (tab by default) while the bug is in this state. (not shown in video)