First I thought some parts of my wireframes were erased, but I looked at my layers and they were there. I inspected them and most of them had become white.

Then I thought I did something wrong because I was on a branch, I merged updates from main and then I merged my branch. I found on my versions a version with the colors so I copied and tried to bring it back, but it was like I did not had editing rights of some parts of Figma.

I closed and open the file several times until I had full editing access. I was able to copy my files from the old version to the new. And then left the file.

I came back again to copy something and again several layers had gone white.

What is causing this? How do I stop it?