Roundcube Sieve rule works only once

==== Required information ====
- iRedMail version: 0.8.6
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): LDAP
- Linux/BSD distribution name and version: centos 6
- Related log if you're reporting an issue:
====

Hi Zhang,

i have enabled a vacation filter & everything works fine for the first time. Whenever i change the filter settings it got updated in the managesieve file but the functionality is not working. When i remove the sieve folder from users mailbox & re-enable filter it works fine

Thanks
Soundarajan