No known issues, but if you were using the same draft on multiple devices you may have made an older version current. First thing to check is if those edits exist in the version history of the draft.
Drafts sync with a “last edit wins” strategy. Sync is usually fast, and keeps up, but if you editing the same draft on multiple devices you can create a conflict where edits on another device are more current and replace edits on another. There should be versions that reflect that history.