World does not upload to cloud / sync.
This is not a realm. Single player survival.
No experimental game play enabled, cheats are off.
Internet connection confirmed.
World size 106 meg.

Expected gameplay: When saving a world, it should sync to cloud with no error message.
Experienced gameplay: World does not sync when saving.

This began when the first version of 1.19 was released, and has persisted through all versions since.
New worlds do not experience this problem.

Attempts to fix. Cleared xbox cache. Also, copied world and the copy has the same issue.

Searched for this issue but could only find realms big report, not single player survival.
Please delete if this is a duplicate bug report.

Video attached.