Suggested fix (unconfirmed): Disable the "Always on top" setting in your programs. Alternatively, move the application window on top of your game window.
Suggested fix (unconfirmed): Hover your mouse over the edge where the hidden bar or panel was until the cursor changes, then click and drag it back into view. Restart Steam or press `Ctrl + Shift + T` if it's a chat or browser window.
Suggested fix (unconfirmed): Press **Ctrl + F1** to center the character and reset her position. If that fails, update to the latest version which automatically re-adapts the display when switching monitors.