Activities show "Renamed library" frequently

In the Sefile 7.1.21 Activity Log we have frequent "Renamed library → " entries.
None of the useres that use the Seafile Client (Windows) ever rename libraries.
It looks like a rename from to (same name as before)
Is this a Windows Client problem or false entry in the Activity Log?

i can confirm this problem in other 7.1* versions, you find this notifications in the “seahub-db”

select * from Activity where op_type=“rename” and obj_type=“repo”

the repo_name equal the old_repo_name