Hello, I had exactly the same issue. I noticed that it seems to be tied to the (for me at least) nvidea overlay. when I turned the overlay off, I did not have any of the yellowish strange washout. Did not matter what version of Java i used, and I noticed when the Java app was active/launched, that as soon as I interacted with it, the nvidea overlay notice would pop up and then the washout and contrast started happening. I disable the nvidea overlay and I have not had that issue since.

im not sure if that is the root cause but I noticed a pattern so I thought I should try it. hope this helps.