I've noticed that Twitch transition has stopped working with source or effect clips after using the Noisy transition.
New comp. Add Gradient and Lines to deck. Twitch transition works. Noisy transition doesn't. Now Twitch transition doesn't.
Also, so far gotten around to rendering one 1080p DXV 3 High Quality which also doesn't transition through Twitch or Noisy. All other video clips continue to transition.
I see this in 4.11 and 4.2 on Windows 7