Unreal Engine Issues
Unreal Engine Issues
SetActorLabel() is slow on Landscapes
UE - Graphics Tools - Terrain - Landscape - Jan 7, 2025I've noticed calling SetActorLabel() on a Landscape will call PostEditPropertyChanged() which causes the Landscape Components to regenerate all collisions. As per the repro, this can take a long tim ...
Shading error after flipping normals on mesh
TM - Interoperability - Mar 11, 2025As far as I can guess is that in the initial state of the object, the vertex normals are as they come from the DCC, but after the modeling operation they get recalculated somehow that doesn't match ...
DirectoriesToAlwaysCook in platform specific configuration files are ignored by the cook process
UE - Platform - Console - Sep 5, 2025When DirectoriesToAlwaysCook is placed in a platform-specific configuration file, the cook process does not read that entry when cooking content for that platform. The editor is aware of the platfo ...
Ensure when calling server RPC from BeginPlay for a component that is not replicated by default
UE - Networking - Sep 18, 2025This seems to occur due to the order in which the component is registered and set to replicate in UActorComponent::OnCreatedFromReplication. The component is first registered with the world, which c ...
Self Shadow enabled causes shadow artifacts
UE - Graphics Features - Sep 4, 2015Shadow artifacts will appears when the camera is moving towards a character or if playing will appears with the character if Self Shadow is enabled for the character. Sample video and image attache ...
Hang and Memory Spike when you create an endless loop in AnimBP Event Graph
OLD - Anim - Oct 27, 2015Hang and memory spike (that doesn't go away) when you create an endless loop in AnimBP. Blueprints have a safeguard against this when you try to PIE with an endless loop, but I think the Animation ...
Infinite Script Recursion error crashes editor and produces UnrealScript errors in logs
UE - Gameplay - Blueprint - Aug 14, 2015Macro that causes an infinite script recursion error crashes editor and produces errors in output log referring to UnrealScript. Frequency: 3/3 Crash Reporter; [Link Removed] ...
Memory leak in Shootergame
Docs - Samples - Jul 27, 2015Memory leak when leaving Shootergame open for extended sessions. ...
Open a level that contains instanced meshes (with built lighting) will crash the editor
UE - Graphics Features - Mar 14, 2015Open a level that contains instanced meshes will crash the editor. Per the users description, the level must have had lighting built and then another level loaded or the editor restarted. Once the ...
LIVE: Beam Particle Systems distort if camera is placed along the tangent's axis
UE - Graphics Features - Nov 5, 2014A Beam Particle System that uses a tangent in its source and target setup will distort if viewed from along the tangent's axis. (See attached Picture) This hold true for all 3 axis . ...