Have you disabled each addon individually to determine if it is one of the addons causing it?
1. Make sure you can re-produce the issue consistently (10 of 10 times, or 8 of ten times, etc)
2. disable all of the new addons and test -- if the issue still exists, disable all addons and test.
3. enable each of the new addons one at a time and test (so only one new addon is running during the tests)
- If the issue occurs with no addons loaded, let ZOS know via a support ticket
- Let us know here which addon(s) cause the issue, and give us as much detail about the issue as possible ...
Such as does it occur on menus that are not changed by the addons you are running etc ...