Syncing Folders

Hello,
I had multiple times, where versions have been “getting lost” in the sync. I had synced the newest version and my teampartners were able to open the newest version. But the next time I opened the folder the newest version was gone and an older version as “overwritten” everything. Is there a way to prevent this? Or double-check what version is synced? I’m confused because the newer version was uploaded since the others could open it.

Greetings