Missing Meta Tags In Subscription Message

[Qingyixia]

Describe the bug
Sometimes resources that are in the payload messages are missing tags although the tags are not missing in the database itself. In other words, the full set of tags is not present in the payload of the subscription message.

To Reproduce
Steps to reproduce the behavior:

1. using the default config setting for Tag Storage Mode which is NON_VERSIONED
2. Setup a new Subscription on Patient
3. POST a new Patient that contains a couple of Meta Tags
4. Then the Subscription will forward a copy of the Patient resource and it will include the correct number of tags
5. Now submit a PUT for that same Patient but add a new tag
6. Notice that the message only contains the new tag

Expected behavior
The subscription payload message should always contain all the meta tags as stored in the database.