My version is no trial. If a render is stopped before it finishes cooking it disappears period. It was my habit to let renders cook using progressive rendering and stop when It hit a resolution good enough for the task at hand. This is no longer possible. 2 diff CPU, RTX, GTX, graphics cards. Doesn't matter. Stopping a render before it finishes on it's own results in a grey screen or a grey screen with a few fully rendered sections that did not need as much time to fully resolve.