Unreal Engine Issues
Unreal Engine Issues
Slow-rendering thumbnails can be queued up for real-time updates
UE - Editor - Content Pipeline - Content Browser - Sep 22, 2016A licensee is seeing performance drops while using the editor due to a custom thumbnail renderer taking a while to generate thumbnails while Real-Time Thumbnail rendering is enabled, and has request ...
Crash upgrading a UMG project
UE - Anim - Sequencer - Aug 16, 2017Translucent objects blink when using Vulkan with Kirin 970 device
UE - Graphics Features - Jul 18, 2019Translucent objects ( e,g, effect, fog sheet ) blink when using Vulkan with Kirin 970 device. This issue doesn't occur on Vulan mobile preview, Snapdragon device, and Huawei honor 9(Kirin 960). ...
Duplicate object assert on ClothConfigNv object creation.
UE - Simulation - Physics - Character - Apr 29, 2020It looks like there are situations where the deprecated config hasn't finished loading before the config map items are recreated causing the assertion: Assertion: Attempting to replace an object th ...
Crash occurs loading a sublevel containing landscape with ray tracing enabled
UE - LD & Modeling - Terrain - Landscape - May 13, 2020In raytracing enabled, When loading a sublevel containing landscape with LoadStreamLevel function following error is shown. Assertion failed: Pair != nullptr [Link Removed] [Line: 584] Licensee re ...
Get Niagara Emitter Vec3 Attrib Results in Hard Crash
UE - Niagara - Feb 14, 2020Also tried it out by replicating the setup in an Actor blueprint with the same result. ...
Viewport has graphical glitch while editing but not in PIE
Tools - Feb 6, 2015User has a project that the viewport has gotten corrupted. The icons are now no longer camera facing and are facing in the positive y axis. The sun disc and sky are blurred. When PIE everything rend ...
Root Motion does not work with Sub Anim Instances
OLD - Anim - Mar 20, 2017Root Motion does not work with Sub Anim Instances. Note: "Root Motion from Everything" is enabled on the Sub and Top AnimBPs ...
Lightmass ignores StaticSwitch in materialinstance
UE - Graphics Features - Aug 12, 2020This is caused by FLightmassMaterialProxy doesn't have GetStaticParameterSet() function. (FMaterial::GetStaticParameterSet() is called.) It can be fixed by adding the following function to FLightma ...
NiagaraComponent attached to the character won't stay active when travelling to a new level using seamless travel
UE - Niagara - Jul 27, 2023The pawn character is added to APlayerController::GetSeamlessTravelActorList, so it'll be persisted during server travel. The Niagara component is spawned during BeginPlay and activated manually. W ...