seki Thank you for reporting the issue. Using the project you provided earlier, I was able to reproduce the issue you mentioned, but I have not yet found a consistent way to reproduce it (i.e., a way to reproduce the issue when starting from a new project). I was unable to reproduce the issue by creating a new project, adding two bones, setting an IK constraint, adding a few constraint keys during animation, and exporting in 4.2 format. Therefore, I believe there may be another underlying factor, which I am currently investigating. I will let you know as soon as we find out something.
export problem
I think I figured out what's going on. It seems like the value of one IK constraint is being imported as the value of another IK constraint. So, when I tried to reproduce the issue in a new project, it didn't happen when I created only one IK constraint.
However, it seems that the naming of constraints is related to the confusion in importing, and I have encountered a phenomenon where changing the names results in different results. I am currently investigating why this is happening.
seki After completing some research, I have created an issue ticket here to fix this problem:
EsotericSoftware/spine-editor891
We apologize for the inconvenience, but please wait until we have resolved this issue.
@seki I don't know what you mean by a previous project and I don't know what you mean by severe misalignment. We can't do anything with your report.
Issue 891 has been solved and we just retested it and it is working correctly. If you find it is not or you have other issues, please describe your problem in a way that we can see it ourselves.