Unreal Engine Issues
Unreal Engine Issues
UnrealMathTest fails when compiled with VS2019
UE - Foundation - Cpp Tools - Oct 10, 2019A crash or breakpoint is triggered when building UE4 with Project Files generated with -2019. Typeinfo.h was changed in MSVC v14.23 to just be typeinfo. ([Link Removed]) There is a pull request t ...
Properties not converting when using Core Redirects from BP to C++ class
UE - CoreTech - UObject - Mar 15, 2021Note: I also tried with different variables names and property redirects. It's also hits and misses. I tried with a bool and an integer. Only the integer will convert but not for all instances.. ...
Runtime import, does not generate proper materials
UE - Editor - Content Pipeline - Datasmith - Importer - Sep 1, 2021The models are darker than the one loaded directly in editor Left runtime, right editor [Image Removed][Image Removed] [Image Removed][Image Removed] You can find some details here from a udat ...
Anim Notify States are ended when CustomTimeDilation is set to zero
UE - Anim - Runtime - Oct 12, 2022UDN link: https://udn.unrealengine.com/s/question/0D54z00008BEDfJCAX/set-actor-time-dilation-to-0-during-a-animation-notify-state-cancel-it?fromCase=1 Notify gathering functions (e.g. UAnimSequence ...
[Soundfield Submix] - Output is silent when routing sound to Unreal Ambisonics and then to Resonance
UE - Audio - Submixes - Dec 8, 2022According to the official docs https://docs.unrealengine.com/4.27/en-US/WorkingWithAudio/Nativesoundfield/ an ambisonic submix can be rendered to Resonance or Oculus; however when doing so, while th ...
MRQ - Groom Issue with Stencil Layers
UE - Anim - Sequencer - MRQ - Jan 31, 2023There is a problem with rendering Grooms bound and attached to animated skeletal meshes when the mesh belongs to a stencil layer in both the Deferred Renderer or the Path Tracer. The groom does not ...
Static lights become stationary after toggling visiblity of level in packaged build
UE - Graphics Features - Jun 11, 2025In 5.5, there is a regression with baked lighting where static lights become stationary lights when a level is hidden and then made visible again. This happens in packaged builds and shows up as sta ...
Standalone Material Function Instance creation results in crash
UE - Rendering Architecture - Materials - Mar 2, 2023Coming from UDN https://udn.unrealengine.com/s/case/5004z00001mDBzzAAG/material-instance-asset-creation-workflows?fromCase=1 Either standalone MFI creation should work just like MaterialInstances, ...
Lyra: OnSpawn player abilities can fail to activate on client in networked sessions
UE - Gameplay - Gameplay Ability System - Nov 12, 2024A licensee who built their game on top of Lyra has reported that OnSpawn abilities, which is a feature provided by the LyraGameplayAbility base class via its ActivationPolicy, have a chance of faili ...
[CrashReport] UE4Editor_Engine!FSceneView::FSceneView() [sceneview.cpp:627]
UE - Editor - UI Systems - Slate - Apr 11, 2017Opening UE4.14 using thecommand line "-forceenablecrashtracker," results in a red circle on the top right of the editor that when clicked provides a link to a 20 second video recorded from when you ...