Yes it has.
1 file gives you copy error.
You upload it again - and in this case it gives you the same error because the file has the same MD5.
In fact you do not have 2 different files with the same file name on FS.
You have only 1 FAILING file (failing to copy, not unreachable), with 2 different links which can not be copied.
It will fail every time you upload it because it has the same MD5 as the 'original' uploaded file, which gives you an error.
If you upload a file 10 times you still only have 1 file on FS, with 10 different links.
Disclaimer:
This used to happen all day long when servers were failing about 8 months ago.
If you uploaded a file and you recieved a 404, you had to repack.
Looks like the same kind of error - but this time you get a copy error every time you upload it.
The server is telling you you can not copy the file, therefore re-uploaded files will also fail because the links are linked to the same file on the same failing server.