Imported Captions with decimal frame rate are out of sync
Captions created for sequences with a decimal frame rate are out of sync with picture when imported into Premiere.
To recreate this issue:
1. Create a new sequence with a decimal frame rate (e.g. 23.976)
2. Add 3 captions to the sequence
3. Export the captions as an SRT file
4. Re-import the SRT to the same sequence
The imported captions will be out of sync by a frame, but over time this drift compounds on longer sequence.