I’m in Shotcut 17.12 on Windows 10 and was editing a large project and it took multiple days so I restarted my computer and reopened the project file. To my dismay, all my carefully timed audio clips in the Audio Track were time shifted at least 1 frame forward on the timeline.
When I initially saved the project, I had a bunch of video clips with audio clips that lined up with the exact start of the video clip, but now they all got shifted forward in time.
The biggest problem is that they didn’t all shift by the same amount. They started off being off by 1 frame, but by the end of my 5 minute video, they were 5-10 frames farther on the timeline from where they started.
If they were all shifted by the same amount, I could have just trimmed 1 frame off the the beginning on the 1st audio clip and all would have moved earlier, but I had to manually drag each one because they got more and more out of sync.
I’ve replicated the bug in new projects and it still shifts audio tracks forward after restarting Shotcut and reopening the project, sometimes by just 1 frame and sometimes more.