BUG - Levels
The levels effect sometimes doesn't update when parameters are changed. Visually, everything stays the same. This will persist through purges. After a random period of time, it will eventually update. It won't show any blue bars like it's trying to preview anything either. Curves, however, updates instantly.
I've tried it setting the project to Open CL, and just Mercury Software. The issue persists. It's not all the time either, but I can't figure out what causes it.