Problem statement

• Spine version 3.8.99, Spine-unity 3.8

• My animation has an IK constraint timeline with softness changes between key frames.
  

• When I export the project with binary data then import into unity. As a result I got wrong curve
  information(actually wrong curve type) in SkeletonBinary.ReadCurve().

• I debugged the code and found that some curve turned into "stepped" while their type should be
  "bezier".

• But when I export the project using json data, the curve information is all right and works fine.

Debug

• I logged the curve type in SkeletonBinary.ReadCurve() and SkeletonJson.ReadCurve() method, here's the screenshot.

Binary(wrong curve type):

Json(correct curve type):

I have no idea it's a bug or not, hope someone can help me solve my problem : )

Attachment

Here is my test project which has the same issue.