Hi!
I think this issue is related to 704 on iOS project (don´t know hot to relate this with an issue located on other project) @nasli

After upgrading to 9.0.3.2 there is another problem sharing shared resources.

Steps to reproduce

1. i have two users, userOne and userTwo
2. userOne shares a folder with full permissions to userTwo
3. userTwo tries to create a share link on a file of his shared folder using the web UI
4. the 'loading' icon never stops, the link is never created
5. in the UI the 'shared link' icon apprears but the link doesn't exists

Expected behaviour

The link of the shared resource should be created

Actual behaviour

1. the 'loading' icon never stops, the link is never created
2. after refreshing the page (f5) in the UI the 'shared link' icon apprears but the link doesn't exists

Server configuration

Web server: Apache 2.4
Database: MySQL
PHP version: 7
OwnCloud: 9.0.3.2 upgraded from 9.0.2.2

Client configuration

Browser:
Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:47.0) Gecko/20100101 Firefox/47.0

Operating system:
Windows 8.1

Logs

ownCloud log (data/owncloud.log)

{"reqId":"sS6ysMKz2\/KHpqweRGG3","remoteAddr":"192.168.1.73","app":"PHP","message":"OCP\\Files\\NotFoundException: at \/var\/www\/owncloud\/apps\/files_sharing\/api\/share20ocs.php#110","level":3,"time":"2016-07-13T07:27:34+00:00","method":"POST","url":"\/owncloud\/ocs\/v2.php\/apps\/files_sharing\/api\/v1\/shares?format=json","user":"userTwo"}