Hello, I have a problem with Rotobrush tool. I used it on a clip, freezed the result and everything was good, until one moment without a reason it stopped working. There was no error message or anything, The layer just displayed as original regardless of the applied effect. I tried to unfreeze the propogation, but this button is no longer clickable (I attached the screenshot). All the foreground and background strokes remained.
I also tried to copy this effect to duplicated layer, but it produces quite a different result and still requires a lot of refining work. The shot is hard and long and I don't really want to do most of the work again.
I would be really glad if anyone could help me with this issue