Unreal Engine Issues
Unreal Engine Issues
Race condition in GetFunctionSig_Write() and other function signatures
UE - Rendering - Architecture - Niagara - Sep 11, 2026A race condition exists in GetFunctionSig_Write() and other places where FNiagaraFunctionSignature is lazily initialized because multiple worker threads can progress past if (!Sig.IsValid()) and st ...
Networked voice starts before local player is registered
UE - Networking - May 23, 2018The voice engine starts before it is ready. FOnlineVoiceImpl::StartNetworkedVoice is called prior to VoiceEngine->RegisterLocalTalker() in FOnlineVoiceImpl::RegisterLocalTalker(). This leads to the ...
MediaPlayer pauses when using voice input on IOS
Media Framework - Feb 25, 2019Translucent material can't get reflection on mobile deferred.
UE - Platform - Mobile - Mar 8, 2022Enabling ZenLoader causes editor crash when undoing Level Instance deletion
UE - Core - Systems - Sep 5, 2024Crash reported through UDN. With ZenLoader enabled, deleting a level instance and triggering Undo causes a crash in ULandscapeComponent::PostEditUndo() The user has provided an example project th ...
Setting Texture Group "UI" from Editor Utility Blueprint at Import causes a crash
UE - Texture - Nov 28, 2023In Blueprint, binding a custom event to OnAssetPostImport and setting TextureGroup to UI causes the UE editor to crash. But if it sets to the other group like "World" or "Character", this crash does ...
Compile failure packaging for Linux in arm-unknown-linux-gnueabihf from Windows
Tools - Apr 20, 2017Packaging for Linux is failing when setting the TargetArchitecture=ArmUnknownLinuxGnueabihf in the DefaultEngine.iniUATHelper: Packaging (Linux): UnrealBuildTool: C:\LinuxXC_ToolChain\v9_clang-4.0.0 ...
Blutility context menu popup shows all pins inside function
OLD - Anim - Jul 23, 2018ActorAction Blutilites are showing all pins inside a function. This does not happen with editor callable custom events. Also occurring in Main/4.21 CL #4221482 ...
Opening a Niagara asset that references a disabled plugin (Chaos Niagara) can crash the editor
UE - Niagara - Jan 18, 2024Opening a module with references to a disabled plugin can crash the editor. ...
UCommonVideoPlayer/Electra does not work in 5.3
zComponent - Archive - Jan 30, 2024This appears to be connected to playing immediately upon opening. This behavior is not observed when in the Release-5.1 or Release-5.2 streams. With the same setup, the video will start playing on t ...