If you've ever encountered a transcript that did not fully completely download when you've selected to download it. e.g The first 5 minutes of the transcript appear in the text file but the last 5 minutes do not, then you're in the right place.
You've likely made an edit to your transcript that caused the formatting of the timestamps to overlap each other or the order of them is misaranged.
For example: Timestamps exactly matching besides eachother can SOMETIMES cut off the transcription download at this point (1:37 for example)
Timestamps that are out order: Can cut off the transcript at the point/before this point where it occurs as well.
How to fix:
You can either try to manually copy/paste and apply the transcripts in a sequential order that works. OR use the revision history feature in the editor to revise to an earlier copy without the error.