Ziti Controller - Error in updating TAGS

[NicFragale]

When using the custom tags functionality of an entity in Ziti, it seems there is either an indexing issue or error condition where a single tag cannot be removed or updated unless there are at least 2 or more tags present. This problem presents itself at least when using a REST interface like CURL or ZAC.

Scenario:

1. Add a tag and give it a value. This works.
2. Try to remove or edit that tag's value (or even its name). This fails, the update returns as if it was accepted, but it does not change anything.
3. Add another tag and value. Now you have two tags/values. This works.
4. Modify either of these tags. This works.
5. Delete a tag. This works, and you now have one tag.
6. Try to delete or modify the last tag. This fails.