When exporting from Premiere or AME, and using custom captions, we consistently get no burn in on the video. VERY frustrating as these go live in minutes. This bug took months to finally nail down and reproduce consistently, but here it is:
When we export ANY file BEFORE the captioned file, the render will fail to burn in. IF we encode nothing but captioned videos, it works fine. Introduce ANY new file with no captions, the NEXT try with captions will fail. This is consistent so far.
When it fails, we can see the AME preview is accurate and does not show captions either.
We reuse a daily news template (mogrt) that we created to drop in our news stories (1-8 minutes) of video and transcribe to custom captions. As Adobe captions are unusable out of the box, I don't know if it happens with stock settings.
WORKAROUND: If we close and reopen AME, exports will work fine as long as you export captions first. Reopening Premiere doesn't cure this.
SYSTEM: Windows x64 14900, Mabook Pro M1
Premiere - bug present with every version since release
if there's any interest from Adobe, would be happy to provide project files and custom captions etc.
Also if this doesn't happen to you, please don't comment with "works for me" nonsense.