Crowd Client Cache is not refreshed when a Group is deleted using JIRA Admin console

To reproduce the problem:
Having JIRA, Crowd and OpenLDAP integrated, do the following:
1-) Create a new group using JIRA's Console
2-) Try to delete the created Group using JIRA console
3-) The operation will be successful, but the Group name will not be removed from the Groups list
4-) Check the LDAP server. The Group was deleted.
5-) If JIRA is restarted, the Group will stop being displayed.

Similar to CWD-1080, but happens to JIRA only.
Also similar to CWD-667, however it happens to groups only.