Renders of captions still disappearing in 23.5

[POwens]

Rendered sections of a timeline that have caption tracks disappear over a short period of time.   My fully rendered timeline from Friday night opened Monday morning with only the non-captioned areas rendered.

PP 23.5

macOS 12.6.6

M1 Mac Studio

[POwens]

Since this problem has been going on for so long, I'm just trying to help you by documenting as much as possible.   Yesterday @4pm I rendered my timeline fully - 100% green.  9am this morning, most of the captioned areas are yellow - but not all.  Which ones have disconnected seems random, but at a glance I'd say about 80% of the captioned areas are yellow.   Experience tells me if I wait a few more hours or until tomorrow without rendering again, 100% will be yellow.   Checking the Video Previews folder, I can see all the 'yellow' captioned areas do indeed exist in there.   Which means the renders aren't disappearing from the disk, but are being 'forgotten' by PP.

[POwens]

Adding one more detail I just saw happen.  I fully rendered my timeline, all green.   Changed start timecode of sequence, all captions went yellow.

[POwens]

More info:

Duplicating a fully rendered sequence immediately after the renders were finished caused 33 captioned clips to become yellow in the new sequence.  I had renamed the new sequence, otherwise touched nothing.

[POwens]

Update:  I finally decided to upgrade my Mac Studio from macOS 12.6.6. to Ventura 13.4.1, and unexpectedly, this simple task seems to have solved this issue!   PP remained the same, at 23.5.   I'm surprised it was an OS update that fixed this, but now, even a week after opening the project, all the renders remain and the timeline is fully green.  This was not the behaviour I had seen until this OS update, where every render would just 'disappear'.

I hope this means this issue is permanently fixed!