Unreal Engine Issues
Unreal Engine Issues
Open Formats: FBX Reimport - interchange reimport bug 5.7 -> 5.8
UE - VEI - Open File Formats - Oct 16, 2026This is a related bug to this interchange fbx one [Link Removed] that is also triggered by reimporting a 5.7 mesh in 5.8 It looks like the asset import data has a property called `node_unique_id` ...
Open Formats: USD Reimport - settings for USD not getting stored
UE - VEI - Open File Formats - Oct 16, 2026Legacy USD importer doesn't remember import options after editor restart. Issue affects both 5.7 and 5.8. The user's choice for "Kinds to Collapse" is stored as a editor preference rather than per a ...
Open Formats: FBX Reimport - Reimport settings for FBX not getting stored
UE - VEI - Open File Formats - Oct 16, 2026FBX assets originally imported in 5.7 lose their "Combine Static Meshes" import setting when reimported in 5.8. In 5.8 "Combine Static Meshes" was changed from a bool to 3-way enum, and the old bool ...
Open Formats: USD Export – Support exporting all UDIM tiles when using “Bake Materials”
UE - VEI - Open File Formats - Sep 15, 2026Hi, I noticed an issue when exporting USD assets that contain materials using UDIM textures. When exporting USD, the “Bake Materials” option allows me to export the base textures and relink them c ...
Open Formats: USD UX - Visibility managemente in USD Stage Actor
UE - VEI - Open File Formats - Sep 15, 2026Working with a big USDStageActor is complicated due to visibility management. We are importing "simple" environments from usd files through the USDStageActor. However, when the artist wants to hide ...
Open Formats: Import - Issue with importing alembic files: the skeletal mesh asset doesn't contain LOD description
UE - VEI - Open File Formats - Sep 15, 2026Helloo everyone!! 😄 We are experiencing an issue with importing skeletal meshes from alembic. For reference, this issue happens in vanilla engine 5.7.4, but it doesn't occur in versions 5.6.x. 1) ...
Open Formats: glTF Import - importer truncates skeletal mesh bone influences to 4 per vertex
UE - VEI - Open File Formats - Aug 21, 2026cf https://forums.unrealengine.com/t/interchange-gltf-importer-truncates-skeletal-mesh-bone-influences-to-4-per-vertex/2745391/2 Original message The UE5 Interchange GLTF importer appears to trunc ...
Open Formats: USD Export - USD Exporter does not export subsequence data from the master sequence
UE - VEI - Open File Formats - Jun 9, 2026As described in the steps to reproduce, when exporting a selected binding somwehere in a sequence hierarchy into usd, the export yields an empty result when using 'selection only' option. The export ...
Open Formats: Interchange Import - UCX Convex Hull Import Bug
UE - VEI - Open File Formats - May 25, 2026When importing custom UCX collision meshes from FBX files into Unreal Engine, certain geometry profiles fail to generate correctly if the option "One Convex Hull Per UCX" is unchecked. The engine's ...