Steps to reproduce:
1. Go to any media in the engage player with activated comment feature
2. Display the comments tab.
3. Check the comment view checkbox.
3. Make a comment at some point in time in the comment tab.
4. The scrubber baloon (black dot) does not appear in the comment scrubber box unless you uncheck the comment view checkbox and check it again.
Comments in the comment tab are not in sync with comments in the scrubber comments box. You need to force the reload using the comment view checkbox.
Moving this to develop, as currently nobody is available to work on annotations.