Swapping the C++ Root Component from a Child BP class, pressing Save, Compile, but not Saving afterwards, will leave the Root Component in a locked state, meaning the it cannot be viewed or edited in the Details Panel after an Editor restart

UE - Framework - Blueprint - Dec 9, 2024

Swapping the C++ Root Component from a Child BP class, pressing Save, Compile, but not Saving afterwards, will leave the Root Component in a locked state, meaning the it cannot be viewed or edited i ...

Linux crash upon opening maps in Soul: City content pack

UE - Graphics Features - Jan 29, 2018

Opening the maps from the Soul: City asset pack on Linux causes a crash. This seems to be rendering related. It was originally reported as a Vulkan specific issue but we've reproduced it without Vul ...

[CrashReport] UE4Editor_CoreUObject!FWeakObjectPtr::Get() [weakobjectptr.cpp:81]

UE - LD & Modeling - Terrain - Landscape - Nov 2, 2017

This is a trending crash coming out of the 4.18 release. It may be a regression. Users have not provided any descriptions of their actions when the crash occurred. Source Context 66 if (!S ...

Occasional crash when attempting to in-app purchase on Android device

UE - Online - Apr 21, 2021

App is frequently terminated with a NullPointerException when attempt to request in-app purchase. It is assumed that product information cannot be retrieved if there is no Google account logged in t ...

SceneCapture2d affects Niagara GPU particles with translucency sorting enabled

UE - Niagara - May 11, 2021

The issue comes from sorting being abled while having a scene capture actor. The enclosed 7z contains assets relevant to reproducing the issue. ...

LightPropagationVolume plugin can not be disabled

UE - Graphics Features - Aug 6, 2015

SceneRenderTargets.cpp includes LightPropagationVolumeBlendable.h, which means if you disable the LightPropagationVolume plugin and compile, you will get compile errors. ...

Black screen caused by depth of field on several mobile devices

UE - Platform - Mobile - Apr 24, 2017

DOF does not display correctly(screen turns black) on several mobile devices. I could repro the issue on:Samsung GALAXY S7, Android 6.0.1Xperia X Performance (F8132), Android 6.0.1 ...

Fountain emitters are constantly showing errors in the timeline and are not displaying correctly

UE - Niagara - Mar 4, 2021

This issue is not present in 4.25.4 You can also avoid the problem if the LoopBehavior of the EmitterState is Multiple and LoopDelay is enabled. [Image Removed] It seems to be a binding of certai ...

Launch on Nexus 9 fails due to unknown arm64-v8a architecture

UE - Platform - Mobile - Mar 13, 2015

Nexus 9 fails due to unrecognized CPU architecture. Need to add mapping of arm64-v8a to arm64 (UE4 internal architecture for this part) so it will fall back to armv7 for now and in future use 64-bi ...

ApplyAdditive AnimBlueprint node with Slot node is not working correctly.

OLD - Anim - Dec 24, 2015

Applying ApplyAdditive node with Additive motion directly on AnimBlueprint works correctly but applying ApplyAdditive node with Slot node playing additive motion is not working correctly that makes ...