Here's a screenshot: Even NT fails to remove the file.
Not a Linux issue so this won't be addressed here, but I believe an upcoming update will fix this by limiting the number of names and finishing with "and others".
@gdrewb-valve Gotta be honest, why are you only taking linux-specific bugs here, and where would I report a bug affecting all platforms?
This tracker was created specifically in support of the Linux client release so that we could track Linux bugs separately when bringing up the Linux client. The only people that monitor this are the Linux team. The regular Steam forums are the place to report all-platform bugs.
Nothing extracted yet.
When using the backup feature, Steam will join the list of games with 'and' and use that string as a foldername for backups. This'll break various filesystems (including NTFS) when you backup a lot of content (and at this point people have lots of content)