Unreal Engine Issues

Animation - Imported fbx animation mesh appears distorted

Reported by user in SF [Link Removed] An animated FBX file from Mixamo appears with a distorted mesh inside Twinmotion. Distortion appears regardless of settings used for import. ...

Alpha Textures reimported via overwriting disappear from level

When you reimport a texture that has an alpha by Importing and then overwriting the previous texture, all versions of that texture in any material or in the level complete disappear until you compil ...

Crash reimporting Geometry Cache with Per X Frames

Crash occurs when the user reimports a geometry cache asset and changes the Sampling Type to Per X Frames. This seems to only occur if Frame Start is set to a value other than 0. ...

Mismatching Between Visual and Collision of Destructible Mesh Using Import FBX Chunk

When you use "import FBX chunk" function of destructible, Mismatching between visual and collision occur. ...

FBX imported skeletal mesh has incorrect axis directions

The axis the FBX is imported with has been inversed from prior versions. See attached screenshots. This causes issues specifically with vehicles, where the movement is happening into the forward dir ...

Shadow Color Not Updated After Light Build When a Texture is Changed and Reimported

Creating a material using a texture (say, blue) and then changing the source file on the texture and reimporting will not update the shadow color after building lighting. Making changes to the mate ...

Fbx Exporter: If 2 sections use the same material, one section will have a wrong material in the fbx.

Uniform Scale has no effect on .fbx's imported with "Transform Vertex to Absolute" unchecked

Uniform Scale has no effect on .fbx's imported with "Transform Vertex to Absolute" unchecked. NOTE: This was tested with assets from both 3DS Max and Blender. Regression (no) issue (does) occur ...

FBX Import flips faces of mesh on Import for static meshes

User is reporting that this is happening with some, but not all meshes. I didn't see anything out of the ordinary when looking at the asset in 3Ds Max, and the asset will import correctly into 4.10. ...

Crash occurs when importing attached FBX with default import settings

While verifying a bug for 4.15 UE-39952 , I tried to repro in 4.14.2 and the editor crashed while attempting to import the attached FBX In 4.15, the Editor does NOT crash a window pops up stating t ...