Unreal Engine Issues
Unreal Engine Issues
Editor crashes when assigning Landscape layer info while Forward Shading is enabled
UE - LD & Modeling - Terrain - Landscape - Nov 7, 2017Crash occurs when Forward Shading is enabled in Forward Rendering Options User noted that if "Support Stationary Skylight" in Project Settings > Rendering > Shader Permutation Reduction is disabled ...
Crash when BP_LightStage SkyLight Cubemap Resolution changed by spinning value
UE - Graphics Features - Nov 28, 2017Engine crashes when the value in the Cubemap Resolution for the SkyLight component in the BP_LightStage is changed by spinning the value. This asset is found within the Advanced_Lighting map of a B ...
Particle emitter with Mesh Data type does not change material to new material instance
UE - Niagara - Jun 4, 2018Particle emitter with Mesh Data type does not change material to new material instance. It will not apply changes that are being made at run time to a parameter in the material instance being used. ...
Textures That Are Not Visible in Viewport Use Low Res Mip During Play in Selected Viewport
UE - Graphics Features - Jun 26, 2018I am unable to test the User-provided sample project in any engine version other than 4.19.2. Per User who reported issue: Mips for textures that are not visible in the viewport but get showed du ...
Navigating the Editor on Linux with a Wacom Tablet is difficult
UE - Platform - Linux - Sep 17, 2018Movement is quite sporadic and jumpy when using a Wacom Tablet to navigate the Editor on Linux. The Editor pans and zooms in and out really quickly with the slightest of movements. This was report ...
Hot reload fails after adding a Static Mesh Component to a new Actor code class in a project that was originally Blueprint-only
UE - Foundation - Cpp Tools - Hot Reload - Oct 25, 2018Starting a hot reload by clicking the Compile button in the Editor fails after adding a Static Mesh Component to an Actor code class. This only occurs in the binary version of the Engine, and only i ...
bPersistentLines is not respected by DrawDebugLine
UE - Graphics Features - Nov 1, 2018It looks like the line's lifetime is forced to the default line lifetime of one second if the provided lifetime is less than zero, which would be the case if calling the function with just enough pa ...
Undo and ConstructionScript break the AttachChildren array
UE - Gameplay - Components - Nov 14, 2019Undo fills AttachChildren array with null by the undo serializer. After that, a construction script tries to remove child components from parent component's AttachChildren but it can't find its poi ...
Getting Emitter.NumParticles on Niagara's GPU compute sim returns 0
UE - Niagara - Jul 27, 2023This problem looks like the following parameters are not defined correctly. The correct parameter is Engine_Emitter_NumParticles. Engine_Emitter_NumParticles and PREV_Engine_Emitter_NumParticles .\ ...
ComponentOverlapMultiByChannel with a rotated simple collision PrimComp misses overlap vs. complex collision
UE - Simulation - Core - Nov 8, 2023UWorld::ComponentOverlapMultiByChannel and internally, the call to FBodyInstance::OverlapMulti, misses overlaps and blocking hits when the PrimComp's (the component used to test overlaps) mesh uses ...