It sounds like .DS_Store is showing up on shared drives. This explains it and has a solution.
https://www.tekrevue.com/tip/stop-ds-store-files-mac-network/
Key snippets:
"So if you’re sharing a NAS at your office with people using Windows PCs, they may suddenly see a bunch of .DS_Store files littering the shared directories..."
"To configure your Mac to not create .DS_Store files on shared network drives, log into macOS, launch the Terminal, and enter the following command:"
write com.apple.desktopservices DSDontWriteNetworkStores -bool TRUE