I've discovered that after I 1) experience the bug, 2) save my changes, 3) close the project, 4) reopen the project, 5) everything seems fine and I can edit a clip, 6) then when I move on to a new clip the bug comes back.   In other words, imagine I have the clip FLOWER.MP4 right next to BEACH.MP4.... well, I can fix the bug and edit FLOWER, but when I went to BEACH, the bug came back, and I had to close the project and open it again. Ugh. ... View more

I saved the project as a new name, shut down premier, restarted premier and it seems to be working fine now. Ugh. ... View more

Exact same problem here. Have not yet found a solution. This just started happening today. ... View more

Steve, two things: 1) go to File > Project Settings > General... and then changing the Mercury Playback Engine Software Only... 2) then delete all stored Previews from your Media Cache. I am not sure which of these two cause the biggest problems, but I've dealt with this problem for years and these steps seem to have taken it away! ... View more

My problem is solved by going to File > Project Settings > General... and then changing the Mercury Playback Engine Software Only... then deleting all stored Previews. ... View more