Template annotations endpoint broken in combination with LiveCopy

Steps to reproduce

1. Create a BasePage
2. Create a LiveCopy Page (in my example BasePage0)
3. Open: localhost:8080/.rest/template-annotations/v1/BasePage0

Expected results

I expect to the proper result from the endpoint.

Actual results

{"error":{"code":"unknown","message":"javax.jcr.RepositoryException: This session has been closed. See the chained exception for a trace of where the session was closed."}}

This is the full Stacktrace: stacktrace.txt

Workaround

I reverted the following last commit, and it works perfectly again.

[-https://git.magnolia-cms.com/projects/MODULES/repos/pages/commits/f1f74da3a4431caa6851a0d8aa9861fb07d6d7d1-]

Update 11.03.2022:
Workaround is not working anymore.

Development notes