Using High Resolution Screenshot while the viewport is in Full Screen causes massive performance issues after the screenshot is successfully taken until the Editor is restarted

UE - Graphics Features - Jan 6, 2022

This is a regression. Maybe Binary only if it hasn't already been fixed. Tested in:StreamCLTypeResults//UE5/Main18386535PerforcePerformance is normal after screenshot//UE5/Main18218925Perforce Per ...

Ragdoll Physics Assets Move Sporadically After Ragdoll Physics Event Invoked

UE - Simulation - Physics - Character - May 3, 2022

Occurs 3/3 times. Skeletal mesh with ragdoll physics applied exhibits sporadic motion after ragdoll physics is initiated.  Regression does occur: When tested in //UE4/Release-4.27.2 @ CL18319896 n ...

Bake Pose is not applied correctly when using LODSettings asset

UE - Anim - Rigging - Jul 16, 2025

The Bake Pose setting does not work when using a SkeletalMesh LODSettings asset. After the change in CL22878911, the BasePose in the LODSettings asset is no longer copied to the BakePose in the skel ...

Crash with Deleted Sound Cue/Wave from Content Browser still Referencing Matinee Sound Track

Tools - May 12, 2015

Deleting a Sound Cue/wave from the Content Browser that is referenced by a Matinee actor Sound Track, and attempt to play the Matinee a crash will occur. I would expect the sound track to simply pl ...

Setting NavModifierVolume's AreaClass at runtime does not result in navmesh rebuilding

UE - AI - Apr 23, 2015

The volume does accept the change and if it gets moved the navmesh will rebuild with new area set. The core issue is that setting NavModifierVolume.AreaClass at runtime does not notify navigation sy ...

Large snap scaling causes meshes to scale 0

UE - Editor - Workflow Systems - Mar 3, 2016

With a large snap scale just selecting the uniform scaler will make the content scale to 0. It seems like it is far too easy for meshes to accidentally be scaled to 0 with snap scaling. Another exa ...

[CrashReport] UE4Editor_Engine!UEdGraphPin::Modify() [edgraphpin.cpp:619]

UE - Gameplay - Blueprint - Aug 29, 2017

This is an infrequent crash coming out of the 4.17 release. User DescriptionsNICE PIN FIX NOW I CANT ADD VARIABLES NORMALLY Source Context 612 void UEdGraphPin::SerializeAsOwningNode(FArch ...

Hot reload can prevent code components from being accessible in blueprints

UE - Foundation - Cpp Tools - Hot Reload - Sep 29, 2017

When a class is edited / hot reload preformed, code based components are sometimes removed from the MyBlueprint > Variables section and cannot be dragged from the Components tab into the graph with ...

[CrashReport] UE4Editor_ApplicationCore!FindWindowByHWND() [windowsapplication.cpp:357]

Tools - Nov 2, 2017

This is a trending crash coming out of the 4.18 release, and may be a regression. Users have not provided any descriptions of their actions when the crash occurred. Source Context 347 stat ...

Editor crashes when compiling widget blueprints when the behavior section is expanded

Tools - Nov 10, 2017

This is a trending crash coming out of the 4.18 release. Users have not provided any descriptions of their actions when the crash occurred. Source Context 367 uint8* FObjectPropertyNode::GetV ...