On my device, version 4.2 beta did not work, so I changed to test version 4.1 . I pulled the Spine_flutter example on github and ran it in the v4.1 branch and the result is as shown below. I don't know what error I'm getting.
example running on chrome: (version: 122.0.6261.112)
example running on firefox: (version: 123.0.1)