The release is missing a release.json file. This file is necessary so that addon-managers can differentiate between different game versions of your releases. Every addon-manager that uses github (like CurseBreaker) has just "updated" the retail version of your addon to WotLKC-v1.3 ... not a good idea. :-(

Didn't know these addon-managers need a release.json.
I've added a release.json to the lastest wrath and retail release here on github.

Hope this will fix it for users that are using these managers.

Thank you for the quick fix. It's working now perfect. :-)