when share_folder parameter is set in config.php, guests are unable to see incoming shares as the share_folder define cannot be created

[maximelehericy]

1. set share_folder parameter to folderForIncomingShares in config.php
2. create a folder, and invite a guest
3. log in with guest account
4. see the shared folder in the Files widget on the dashboard
5. click on it.
6. you see nothing
7. click on Files, you see nothing

As guest quota is 0B, folderForIncomingShares cannot be created.

Expected:

folderForIncomingShares should be created, and guests should be able to access data shared with them.

[alexanderdd]

from Maxime: there is a workaround: create a groupfolder named "Shared", with only read access for only Guests group

[joshtrichards]

See #1106 and #335