Simple collision Landscape returns incorrect physical material

UE - LD & Modeling - Terrain - Landscape - Oct 16, 2019

When a landscape uses simple collision, the returned physical material can be mismatched. This seems to be a result of ConvertHeightfieldDataForPhysx within ULandscapeHeightfieldCollisionComponent: ...

GPU time is not tracked in StatFPSChart on Android

UE - Platform - Mobile - Jul 20, 2018

This issue doesn't occur on iOS using the same project. This occurred on all the devices tested, which were: Galaxy S6 (SM-G920F), v6.0, Mali T760MP8 Galaxy S7 (SM-G930V), v7.0, Adreno 530 Galaxy S ...

LineTraceComponent does not respect bEnablePerPolyCollision

UE - Simulation - Physics - Feb 26, 2019

USkeletalMeshComponent::LineTraceComponent does not properly consider bEnablePerPolyCollision. It appears to use the component's bodies, which are empty. It should be sufficient to use UPrimitiveCom ...

Child widgets do not maintain the Enhanced Input bindings from their parents

UE - Gameplay - Input - Apr 9, 2025

Test content for this bug is in the /EnhancedInputTesting/UE_268605/EnhancedInput_UE268605 level in QAGame! When a widget blueprint is created with Enhanced Input bindings in the event graph, whe ...

Opening Editor preferences window while simulating and pressing Play/Stop causes memory leak

UE - Foundation - Core - EditorLoader - Feb 3, 2020

An open but minimized Editor Preferences window causes a memory leak while simulating and repeatedly pressing Play/Stop. ...

Sequencer causes 3DWidget on BP vectors to snap to Actor when active

UE - Anim - Sequencer - Nov 15, 2025

When we have Vectors in BP with Show 3D Widget enabled, the Transform Widget would always snap back to the Actor after we move the 3D Widget in-world. [Link Removed] Removing the _DaySequenceActor ...

[CrashReport] UE4Editor-Core.dylib!<Unknown>

UE - Platform - Apple - Jan 11, 2016

Tried to add new event in blueprint but crash Crash reporter link: [Link Removed] ...

Following the 'Working with Modular Characters - Skeletal Mesh Merge Example' results compilation errors

UE - Anim - Feb 10, 2022

This is a Regression. Tested in: //UE5/Release-5.0 CL 18747223 GitHub //UE4/Release-4.27 CL 18319896 Binary The example can't be completed in UE5 as expected presumably because of a change within ...

Check() crash in merge tool when using SVN

UE - Gameplay - Blueprint Editor - Oct 21, 2015

A UDN user found a crash in the merge tool when using SVN. https://udn.unrealengine.com/questions/265740/crashbug-with-svn-merging.html The failing check() crash occurs in LoadBaseRev (Merge.cpp): ...