Blender 4.2: Skinning bug

Support Animation and Rigging
1

There seems to be a Bug in the skinning evaluation in Blender 4.2. This is an example.

  1. Something in Blender is pulling the parts of the lip down.

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  2. However, there is only one bone influencing the lip. Nothing should be pulling the lip down.
    If I look at the skin weights in Weight Paint mode, I see the same 1 bone influence…there is no second bone pulling the lip down.

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    image912×214 86.8 KB

  3. If I export the rig and mesh to UE, the same mesh that looks bad in Blender, looks fine in UE5.

  4. The preserve volume options are already turned on. But I still see the skinning issue in Blender.

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    image741×231 73.2 KB

  5. How can I resolve the skinning in Blender? This is not a Rigify rig, it is an AutoRig Pro rig.
    image

2

Hi, try using the smooth/blur brush in weight paint mode in that area.

1 Like
3

  1. There is nothing to blurr/smear. The verts are weighted to one bone.

  2. I’m trying to figure out why the verts appear to be influenced to a second bone. But Blender is telling me that there is only one bone.

  3. This is a skinning anomaly, there seems to be a second “phantom” bone that Blender seems to think it there. But Weight Paint mode tells me there is only one bone as the influence.

4

Can you post the file or link it? no need for textures or scene.

5

You are only going to be able to see the anomaly if you have AutoRig Pro.

6

I don’t have it sorry.
Your first image show that there are six bones around the mouth lips?
lips

7

AutoRig Pro seems to also have a problem when it comes to Symmetrizing the skin weights.

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image905×415 141 KB

  1. I used the method that starts at time index 1:29.
  2. When I select the right thigh bone, the weights on the left side were also selected.
    . And the weights are not mirrored symmetrically.
  3. It also did not mirror the weights correctly. It copied the weights to both sides. And the copy was not symmetrical. For example, if I select the right thigh bone. I can see the weights were copied wrong onto the left side, not symmetrically.
  4. This is an Autorig Pro problem. This skinning anomaly does not show up with Rigify.
8

May be you need to contact the creator of the app?