[Bug]: Default link share expiration date not visible

[ChristophWurst]

⚠️ 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

A default expiration date for link shares can be set by admins. In the 31.0.0 rc1 sharing sidebar I see the checkbox selected for Enable link expiration but the expiration date says mm/dd/yyyy. Only after creating the link and reopening the share settings I can see the actual expiration date.
This was visible before, hence this marks a regression.

Steps to reproduce

0. Have an admin enable an expiration for link shares
1. Open the sharing sidebar of a file
2. Create a new share link

Expected behavior

See the actual expiration date even before the share is created.

Nextcloud Server version

31

Operating system

None

PHP engine version

None

Web server

None

Database engine version

None

Is this bug present after an update or on a fresh install?

None

Are you using the Nextcloud Server Encryption module?

None

What user-backends are you using?

• Default user-backend (database)
• LDAP/ Active Directory
• SSO - SAML
• Other

Configuration report

List of activated Apps

Nextcloud Signing status

Nextcloud Logs

Additional info

No response