Text field contents removed on fullscreen change.

When i type in to the chat field, and then press f11 to change to/from fullscreen mode, the text i have typed in disappears.
The two attached pictures shows before and after i press f11.

What I expected to happen was...:
The command/text should be in the field when i change to fullscreen mode.

What actually happened was...:
The typed text dissappears.

Steps to Reproduce:
1. Type something in the chat
2. Press f11
3. The text disappears.