Unreal Engine Issues
Unreal Engine Issues
Using PCG, StaticMeshComponentPropertyOverride only takes effect when the flag ExecuteOnTheGPU is off.
UE - World Creation - Procedural Tools - Feb 9, 2026StaticMeshComponentPropertyOverride only takes effect when the flag ExecuteOnTheGPU is off. All error checking for StaticMeshComponentPropertyOverride turns off when the flag ExecuteOnTheGPU is off ...
MRG - Additional Post Process Render have a black alpha channel
UE - Virtual Production - Tools - MRQ - Feb 7, 2026Additional Post Process renders always have a black alpha channel ...
Chaos Cloth - Multiple issues with convex colliders
UE - Simulation - Visual - Feb 6, 2026Issue 1: Convex Collision Transformation Missing for External Collision Sources Issue 2: Convex CCD Stability Issues due to Plane Intersection Semantics See attached URL for more details. ...
Object Columns using soft asset references will return null results
UE - Anim - Gameplay - Feb 6, 2026We have encounter an issue in the Chooser when we setup output object column for soft reference object ptr (an optional montage object). It is working correctly when the montage is loaded. But befor ...
Animation compression deadlock
UE - Anim - Runtime - Anim Blueprints - Feb 5, 2026The deadlock occurs when attempting to cancel compression during animation sequence destruction. The compression thread ends up deadlocking with the game thread, which is the one requesting the canc ...
Drag and drop does not work from a window created with PySide
UE - Editor - Workflow Systems - Feb 5, 2026The cursor position is no longer updated during drag and drop, so drag-over events cannot respond correctly. Commenting out the following code in WindowsCursor.cpp works as a workaround ( the behavi ...
Possible to duplicate shot tracks
UE - Anim - Sequencer - Feb 5, 2026Multiple shot tracks are a problem source, and UE seems to try and pre-empt them by disabling the menu option to add a second one when one is already in there. Duplication, however, is still permitt ...
Possible leak related to using Nanite meshes for Landscape
UE - Graphics Tools - Terrain - Landscape - Feb 5, 2026A licensee reported that the Bulk data for the nanite mesh generated for Landscape proxies can leak in the editor. It could appear as the normal BulkData “leadk” related to fulling loading an Asset ...
Adding weights to bones doesn't properly update skeltree
UE - Anim - Rigging - Skeletal Editor - Feb 5, 2026Rounding of conversion of anim length into frames add an empty frame to the animation
UE - Editor - Content Pipeline - Import and Export - Feb 5, 2026cf. https://forums.unrealengine.com/t/gltf-import-bug-animations-have-an-entire-extra-frame-when-source-animation-is-slighly-above-target-length/2697309 The GLTF importer adds an extra frame to the ...