If AFK detection is enabled on Desktop mode, you can press the END key to toggle AFK mode. This feature still exists and works, but it seems to behave differently now when you have menus open.
The AFK toggle button used to not work if you had a menu open, such as the Quick Menu or Main Menu. However now you can press the END key to toggle AFK while you have menu open, which is a nice change really, but it has issues.
Main issue is pressing the END key while writing in the Textbox input will toggle AFK.
The added weird part is that if AFK was toggled on while in the Main Menu or the Chatbox input, it will turn itself off when the menu is closed. This feels very confusing and unintentional.
Steps to produce:
  1. Start VRChat in Desktop mode
  2. Ensure that "AFK Detection" option is enabled in Action Menu -> Options -> Avatar
  3. Open the text chatbox input by pressing the Y key
  4. Press the END key while typing in the input field
  5. Notice that the END key toggles AFK (This is new/unexpected behavior)
  6. Close the text chatbox by pressing ESC
  7. Notice that AFK toggles off (This behavior doesn't make sense)
  8. Open the Main Menu
  9. Notice that the END key toggles AFK (This is new/unexpected behavior)
  10. Close the Main Menu by pressing ESC
  11. Notice that AFK toggles off (This behavior doesn't make sense)