[horde] Folder sharing issue 5.2.4

[murali at itechservices.in]

Hi

I have installed horde groupware webmail on debian7.7 following this 
link 
https://www.howtoforge.com/install-horde-5-webmail-for-ispconfig-on-debian-wheezy. 
Everything working fine except the folder sharing via file manager. 
Folders shared via file manager are not shown to the users to whom we 
have shared. Can some one help me to solve this issue.


Thanks in advance