[Bug]: conflict resolution for existing folder when setting up sync connection is broken

[jospoortvliet]

⚠️ Before submitting, please verify the following: ⚠️

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

Bug description

The resolution thing for an existing server doesn't work - it detects a folder exists, gives me the options of what to do (overwrite or sync contents) but the 'connect' button will stay grey.

Steps to reproduce

1. create a new account
2. pick a non-empty folder to sync with the server
3. choose a resolution - any - you won't be able to proceed (at least not that I could find out)

Expected behavior

When you pick a resolution, you should be able to proceed.
...

Which files are affected by this bug

none

Operating system

Mac OS

Which version of the operating system you are running.

latest

Package

Other

Nextcloud Server version

25beta3

Nextcloud Desktop Client version

3.6RC2

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

Updated to a major version (ex. 3.3.6 to 3.4.0)

Are you using the Nextcloud Server Encryption module?

Encryption is Disabled

Are you using an external user-backend?

• Default internal user-backend
• LDAP/ Active Directory
• SSO - SAML
• Other

Nextcloud Server logs

not really relevant I think

Additional info

Not sure if client logs etc are relevant?

[qgjdev]

This is now again an issue for me on Nextcloud 3.15.3. Haven't had the issue before but when reinstalling my OS and afterwards installing Nextcloud through ppa:nextcloud-devs/client and trying to sync an existing folder (which is ~120GB so I'm not willing to move everything and re-syncing manually) I get the exact same problem.

I've tried a workaround with a backup nextcloud.cfg from which I just copied the necessary lines (folder etc.) but then I'll be prompted to relogin after every reboot.

EDIT: Also happens with the AppImage version btw.