Steps to reproduce

1. Open user management screen.
2. Delete existing group.
3. Open drop-down that is used to add new (not yet created) users to a group

Expected behaviour

The deleted group is not listed in the drop-down.

Actual behaviour

The group is still there.

Server configuration

ownCloud version: ownCloud Enterprise Edition 10.2.1 (stable)

Updated from an older ownCloud or fresh install: fresh

Where did you install ownCloud from: Docker Hub