This patch is intended to update our infrastructure, and does not include content changes. Part of the infrastructure updates requires us to update our Addon API, which can break existing addons, as any patch can.
However, while we can’t guarantee the behavior of any specific addon, it’s possible that addons currently supported in Burning Crusade Classic will now work for Classic Era. Addon authors should be able to make that determination for their specific addons.
Regarding camera and targeting issues, we suggest that you check your interface options for Camera Following Style (Esc/Interface Options/Camera) and Sticky Targeting (Esc/Interface Options/Controls). These may have changed from the setting you were expecting.
If you continue to experience issues, please report them in our Bug Report forum.
Thank you!