Your system information

• Steam client version (build number or date): March 30, 2017
• Distribution (e.g. Ubuntu): Ubuntu 16.10
• Opted into Steam client beta?: [Yes/No] Yes
• Have you checked for system updates?: [Yes/No] Yes

Please describe your issue in as much detail as possible:

Steam Controller Keyboard gets stuck consistently at the second character input.

In general, it works very strangely. Example: I open gedit, I alt-tab to the keyboard screen. I input the characters "a" and then "b". The keyboard application gets stuck; it completely stops responding to the Steam Controller buttons. The input is not yet sent to gedit (not even the "a") but I assume this is intended. I minimize the keyboard, and gedit now has "ab".

I do the same thing, entering the letters "o" followed by "k". It gets stuck, I minimize it. Now gedit has the string "ko". I tested several times and it's always "ko" as far as I can see.

When gedit is in focus and the keyboard window is next to it, I can successfully enter several characters and gedit gets them as they are typed.

This was tested on beta and on non-beta.

Steps for reproducing this issue:

1. Start Steam
2. Start some program that takes input, e.g gedit
3. Press joystick to start the keyboard
4. Enter two characters. Observe stuck keyboard.
5. Advanced: enter two characters. Check whether they're in the correct order.