Update: I've determined that the "Poor Lighting" feature in Content Aware causes the problem. Much of the "Shaky Video" overlapped the Poor Lighting area. Now I see that anytime I fix the Poor Lighting, my audio moves seconds earlier compared to the person speaking in the video. But the length of the audio track has not changed under the video, nor has it moved to the left as I would expect.
Also, when I tried to Render Preview of this clip, not only did the green bar show up above, the green bar showed up over the next video clip - but this time it was only in one-second pieces separated by 4-seconds each. When I played that part, the video blanked out each time it reached one of the short green bars. This seems to relate to the transitions of the 4-second still images above the video clip.
Then when I subsequently select the video clip, i PD complains about the video clip being unreadable and the sound goes away, video still playing. This has got to be a bug.
Bill Seifert
HP Pavilion Desktop TP01-2022
8 core
AMD Radeon
Windows 11, 16 GB RAM