As soon as I open fullscreen mode the gamma seems to be increased and colors look washed out. This happens in menus too. In windowed mode everything works fine. I also found a similar bug report for 1.13.2 that is flagged as resolved: MC-147545
Comments 2
Please follow the instructions in the comment on MC-147545
I just noticed as I was taking Screenshots, the background in the Screenshots is randomly either completely white or like it should be with out color issues.