As you know, OneDrive has been able to automatically move your Known Folders (Documents, Desktop, Pictures) from your local device to your OneDrive space for quite some time now.
Well, a coming change for this feature may impact you.
When the Known Folders do not exist yet on your OneDrive, the change will use your Windows Display Language to provision the new folders and not your OneDrive language settings.
If you want to have your Known Folders provision using your OneDrive language settings, you can pre provision them before turning on the Known Folders Move capability.
The change is planned to occur starting December 10, 2020