Got this bug just now.
all scrambled and unable to select anything.
Never got it before and i did do a lot of playthroughs of the game and after loading the autosave, the bug did not repeat itself.
Still i wanted to share it, in case other players have had the same bug.
It could be just a screen error restart the game (autosave will help) or just tab out then in
Wait for a minute, autosave, and problem solved.
Or, you could just, you know, not be in G3 for a year.
Going back 4 minutes in the game with my autosave solved, but still it’s a weird bug 
Hey, We are aware of this and are working on it!
You are using 1.3.13 Jay?
Ye using 1.3.13, but must add that it was on my Win Xp system.
Just wanted to check the version. We had reports of this issue across many platforms and with windows being so stable at backwards compatability its not a XP problem but ta!
What? What was ta?
Oh I forgot this bug in my 1.3.13 last night, I got it too!
On Windows 7
I got it when I was testing out the FPS in the Test-build for 1.3.9 earlier this year.
Its English, a shortened version of "Thanks"
Can also be used as “Ta ta” which means good bye
as if “thanks” isn’t short enough already hahaha
Well okay. Ta for your help! 
I still get this problem in the new steam version.
Its only happened once though (Most of the time, it is fine)