I am in Premiere Pro 24.0.0 and doing captions for a video in a 29.97 non-drop timeline. fter getting some complaints from my vendor abvout the timecode shifting, I tried to recreate the issue finding that I was experiencing the problems as well. In attempts to solve the problem, after exporting the CEA-608 captions to a non-drop .scc file, I reimport the .scc file to the same timeline to compare it against itself and the 'coverage' shifts in a few places. Nothing about the shifts are consistent or predictable, and so I think it might be a bug. I've included an image of the orginal CORRECT cations and the reimported .scc files on the illuminated track above.
Any thoughts for a solve on this?