zf3d We apologize for the inconvenience. Are you referring to Spine-Unity 4.3-beta? We are aware of an issue that can occur when exporting in binary format with 4.3-beta. this problem has also been confirmed in spine-libgdx, which serves as the core foundation for all Spine Runtimes.
Resolving it requires work by Nate, who is both the Spine Editor developer and the maintainer of spine-libgdx. Unfortunately, due to the large number of items currently requiring attention, this issue has not yet been addressed. Once it is resolved in the spine-libgdx runtime, a new package for spine-unity should be released promptly.
We appreciate your patience and understanding while we work through this.