zhulixintm Unfortunately, we cannot pinpoint the exact cause based on that information alone. However, regarding your question about whether there is a patch for this issue mentioned last, Spine 3.8 and spine-unity 3.8 are no longer supported versions. Therefore, even if it were indeed a bug in the Spine Editor or spine-unity, a fix for that bug would not be released as a 3.8 update.
Could you please email us a minimal Unity project that reproduces this issue?: contact@esotericsoftware.com
Please include the URL of this forum thread in the email so we know the context. Then we can take a look at what's wrong.
