Unreal Engine Issues
Unreal Engine Issues
Make Bitmask node returns incorrect value when using custom Enum
UE - Gameplay - Blueprint - Jul 5, 2016When a custom enum is used as the Bitmask Enum of a Make Bitmask node, the value returned does not match the expected value ...
Crash when destroying a Widget Component during the OnAnimationFinished delegate of it's UserWidget
UE - Editor - UI Systems - Nov 4, 2016UserWidget animations will be ticked as part of the WidgetComponent's DrawWidgetToRenderTarget(). This will lead to a crash when we attempt to set the LastWidgetRenderTime to GetWorld()->TimeSeconds ...
[CrashReport] UE4Editor-CoreUObject!FPropertyProxyArchive::operator<<(FField * &) [PropertyProxyArchive.h:45]
UE - Foundation - Cpp Tools - Hot Reload - May 8, 2020Generated from CrashReporter Error message - Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address [different address per crash] ...
Editing an array config property via ProjectSettings can end up editing other platform config properties.
UE - CoreTech - May 27, 2024Platforms .ini config files can end up with incorrect data, due to how ProjectSettings manages the config data. On a Windows machine, if we open the ProjectSettings window, all the data is going to ...
Nanite can assert in ValidateFixupChunk: 'Assertion failed: HierarchyNodeIndex < Resources.NumHierarchyNodes'
UE - Graphics Features - Nanite - Aug 29, 2024Reported by a licensee. More discussion in the linked UDN case. "Sometimes the WorldPartitionBuilderCommandlet will fail after encountering this error:" Error: Assertion failed: HierarchyNodeIndex ...
Crash When Attempting To Change LOD1 Cloth Assigned
UE - Simulation - Physics - Character - Apr 12, 2017At times when trying to assign APEX cloth to LOD1 material the engine will crash. I got a 100% repro rate following the steps listed above. I have found some inconsistent errors when trying to rep ...
Sprite collision is inaccurate
UE - Gameplay - Paper2D - Oct 31, 2014Sprite collisions do not accurately reflect the collision for the sprite. While the collisions are always the same between two of these, the collisions do not correspond to the shape of the collisio ...
Incorrect derivative ops detection when Add node is used with Nanite Pass Switch node in material graph
UE - Graphics Features - Mar 11, 2025Plugging an Add node which adds a constant value into a Nanite Pass switch node results in derivative ops to be detected where there should be none (which show up as red in the No Derivative Ops deb ...
FIOSInputInterface::SendControllerEvents crash due to UIInterfaceOrientation call from game thread
UE - Platform - Mobile - Apr 29, 2020From [Link Removed], licensee reports We believe that querying the UIInterfaceOrientation via UIApplication on the game thread is the issue here. We have made changes to IOSInputInterface.cpp and I ...
[CrashReport] UE4Editor_Engine!UpdateRefToLocalMatricesInner() [skeletalrender.cpp:202]
OLD - Anim - Mar 8, 2018No user comments in the crash group ...