I ran into this issue yesterday -
- login to owncloud (188.8.131.52 on Ubuntu 14.04)
- Select ‘Favorites’
- Navigate to a sub-folder
- upload a file
- create a public link to the file
==> The public link actually opens the original folder that was marked as a ‘Favorite’ instead of the file that I intended to share.
If I follow the same process without using ‘Favorites’, the public link behaves as expected.
This issue is not present in Nextcloud 184.108.40.206
Please report such issues directly to the bugtracker at  where developers are noticing this.
Had a quick try with 9.1.4 but couldn't reproduce.
A full bug report with all enabled apps could help.
I've posted an issue in github:
I am unable to replicate this problem after rebooting my workstation.
I believe it was a temporary problem caused by instability in my browser (which occasionally happens to me on my daytime workstation).