Adobe cloud preview links - only 2 out of 3 previews updating when changes are made

Hi! My team and I routinely use Adobe cloud previews to let clients take a look at artwork and mockups.

It used to work flawlessly until a couple months ago, where team members noted that any changes to the artwork (and repeatedly updating the links) did not necessarily update the previews. The preview function itself then went down, but thankfully came back up again (thanks for that!!).

Fast forward two months and now we're noticing the following:
- Updating the links will update the THUMBNAIL and DOWNLOADED asset, but the actual full-size preview remains outdated.
We hope this helps to isolate the issue - chances are 66% of the changes implemented were brilliant and worked but the full preview generation was missed out in the fix.