@Gijun Thanks for reporting and sorry for the troubles. I assume that you're using the latest spine-unity 4.3-beta runtime from the download page, if not, please have a try whether updating resolves your issue. The spine-unity 4.3-beta runtime is currently up-to-date with the reference implementation, so this would be a bug then. We will have a look at whether we can reproduce the issue on our end as well.