Unreal Engine Issues
Unreal Engine Issues
World position offset (WPO) and nanite enabled causes shadow of complex static mesh actor to be deformed at a specific distance
UE - Graphics Features - Nanite - Dec 19, 2024Context / Problem: Complex static mesh actors with nanite enabled and Evaluate World Position Offset (WPO) enabled works together except for a specific distance where the shadow is deformed and sort ...
Crash when setting Project to only use Windows and DX11 with texture compression as BC7
UE - Graphics Features - Jan 11, 2016When user sets their texture compression to BC7 while the project settings are set for Platform to only be Windows and use only DX11 this will cause any textures with this set to cause a crash when ...
tvOS crash on startup with Shared Material Shader Code enabled
UE - Platform - Mobile - Jul 9, 2019Enabling Shared Material Shader Code will cause a crash on tvOS From user: "We originally enabled Share Material Shader Code long before trying a tvOS build, making this crash tricky to debug. W ...
Child actor passes a string to it's parent's overloaded constructor the incorrect string is received
UE - Gameplay - Sep 24, 2019When a child actor passes a string to it's parent's overloaded constructor using an overridden function that returns a string it won't receive the correct string. I have verified that the correct fu ...
Masked TwoSided material causing lumen direct lighting to leak through walls
UE - Graphics Features - Lumen - Apr 23, 2024It appears that LumenScene's Hardware Ray Tracing is causing light leaking into a sealed room (which should be perfectly black). This bug does not appear to happen on AMD GPUs. ...
Packed level actors and Level instances are sometimes not included in HLOD build on a World Partition Level
UE - World Creation - Worldbuilding Tools - HLOD - Mar 14, 2025Context World Partition - Hierarchical Level of Detail (HLOD) system uses custom HLOD Layers to organize large amounts of Static Mesh Actors and generate a single proxy mesh and Material. Problem T ...
Audio Components ignoring Start Time set by Play node on Android
UE - Audio - Jul 15, 2015Setting the start time within the Play node for an audio component does not function when deploying to Android. The set up works fine when playing on the PC, and the sound functions on the Android ...
PhysX generates extra "sleep" event when moving Kinematic actors away from Simulated actors with Teleport option.
UE - Simulation - Physics - Aug 4, 2016Issue seems to be related to NpRigidDynamic::setKinematicTarget. When called by itself (like in the case of Kinematic bodies moved without teleportation), the simulated actor is woken and is put ba ...
Orthographic Camera view doesn't work with movable directional light shadows and partly with stationary shadows
UE - Graphics Features - Feb 26, 2015See attached video for clear examples. When using the orthographic camera perspective with default light settings to stationary for directional light source. Other light sources work as intended. T ...
Actor with Camera Component UProperty causes ensure when PIE ends if replicating
UE - Networking - Nov 17, 2015If an Actor with a CameraComponent is set to replicate, ending a PIE session with 2 players will result in an ensure ...