⚠️ This issue respects the following points: ⚠️

• This is a bug, not a question or a configuration/webserver/proxy issue.
• This issue is not already reported on Github OR Nextcloud Community Forum (I've searched it).
• Nextcloud Server is up to date. See Maintenance and Release Schedule for supported versions.
• I agree to follow Nextcloud's Code of Conduct.

Bug description

Steps to reproduce

1. Try creating a file with forbidden char >
2. See screenshot above

https://github.com/nextcloud/server/blob/master/apps/files/src/utils/filenameValidity.ts