My recommendation would be to re-analyse those songs and create a new beat grid then see if the problem persists. If so, the next step would be to delete them from the collection, then re-import and see if it's still a problem.
Good evening.
I recently had problems with rekordbox, I'm using version 5.8.3, my problems are these, in export mode, when I'm going to adjust the beat grid, when I adjust to the beat, the metronome's sound doesn't accompany the beat, however, the grids are right looking at the screen, another problem, when I make hotcue points they are not being saved, sometimes they disappear and sometimes the markup appears at another point, I have 2 videos and a print that I made for you to understand
This last problem hindered my presentation last week, it ended up confusing me and misleading me, because I was unable to do what was scheduled.
https://drive.google.com/file/d/1dNhfvPCODLKh-ba7jz84QTPQK29OBajw/view?usp=sharing
https://drive.google.com/file/d/1DYIaV-6uvTUlEh-QhFqTb32j0eDHUw0e/view?usp=sharing

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My recommendation would be to re-analyse those songs and create a new beat grid then see if the problem persists. If so, the next step would be to delete them from the collection, then re-import and see if it's still a problem.