Unreal Engine Issues
Unreal Engine Issues
InverseExposureLerp should return 1.0 when EYE_ADAPTION_DISABLED is 1
UE - Graphics Features - Sep 16, 2024Materials using EyeAdaptationInverse may render incorrectly when debug visualizations are active. This issue can be resolved by modifying the EyeAdaptionInverse function in EyeAdaptionCommon.us ...
WorldGridMaterial gets added as Element 0 when importing LOD model
When importing a LOD model, LOD material can get added as element 0, not preserving previous material assignment. It's not possible to re-order/delete the automatically added Element 0 WorldGridMat ...
Editor crashes on Mac when launching with the command -MacExplicitRenderer=0
UE - Graphics Features - Jan 19, 2017Trying to launch the editor with the command -MacExplicitRenderer=0 causes a crash. At the time of the crash, the following line appears in the log:LogMac:Error: appError called: Assertion failed: A ...
Light min roughness set to 0 will create black artifacts on materials with negative roughness value
UE - Graphics Features - Aug 9, 2016Any light's min roughness setting creates black artifacts with materials who have a roughness value less than 0. The min roughness must be =< 0. ...
Assertion trying to open packaged project on Linux: Default__MaterialInterface was listed as a fixed load order but was already processed
UE - Foundation - Core - Feb 20, 2017This might be related to [Link Removed]. ...
Unreal Match 3 Does not Download/Install from Launcher in for UE4.15
Docs - Samples - Mar 1, 2017Unreal Match 3 fails to install for UE4.15, unlike all previous versions. ...
Engine no longer compiles after backporting RHI thread improvements and crash fix
UE - Rendering Architecture - RHI - Apr 24, 2025Unreal Engine 5.4 code will no longer compile after applying both the RHI improvement code changes as described in [Link Removed] and the fix for the crash described in [Link Removed]. The compilati ...
Morph target for SK_BoxMorph_1 exceeds 1.0, causes the sphere shape to bend inward
Docs - Samples - Jul 10, 2017In Content Examples, the morph targets assigned to SK_Box_Morph_1 exceed 1.0. While it's not "wrong" for morphs to go beyond that, it doesn't seem like it's a great demonstration in the asset. Goi ...
GPU Crash in Niagara Fluids template when WorldSpaceSize has a component at 0
UE - Niagara - Apr 26, 2024The NiagaraFluids plugin provides several Niagara System templates to use as a starting point for the user's own Systems. The templates in category "3D Gas", such as "Grid 3D Gas Explosion", include ...
Setting Physics Blend Weight to anything between 0 and 1 causes erratic behavior
UE - Simulation - Physics - Jul 27, 2015If the user simulates all bodies, and then sets the physics blend weight to a decimal value between 0 and 1, the skeletal meshes will spin out of control. This doesn't happen if the physics blend w ...