As you probably know we’re currently working on a big update of Spine in Defold. First, we’ve moved our own Spine implementation to an extension, and second we’re migrating the extension to the official Spine runtime by the makers of Spine. This is ongoing work and I can’t say for sure when it will be done, but we’re making good progress. I expect the animation to work in the updated Spine extension once it is done. We will not fix any issues with Spine at the moment, unless this issue is directly related to the recent move to a separate extension.
But maybe someone from the community can take a look and perhaps figure out what’s wrong?