The Parallel Processing bug that I reported on here:
which was said to have been fixed here:
has only been partially fixed. The Parallel Processing bug comes back if a clip with Text: Rich is interacting with another Text: Rich filter. That means the bug comes back if one clip has more that one Text: Rich filter or if two separate clips that each have the filter are placed one after another or one on top of the other. The Parallel Processing bug is even an issue if one clip has both Text: Rich and Text: Simple.