Every projects starts as anaglyph, why?

For some odd reason all my projects loads with anaglyph mode. I have no idea why? It just suddenly started to happen. It does not matter if I open old project or start a new one, the same anaglyph look is everywhere.

How can I disable this? I cannot work like this. Here’s how it looks.

Thank you!

I did uninstall one codec pack for media player and after that the effect disappeared. Does not sound a logical reason at all, but it somehow fixed it. I’ve tried to fix this issue for couple of days. Luckily it is now gone, hopefully for good.

Did you got to know what you turned off ? I want this effect in my agame