Duplicated bp components incorrectly double their transforms when created

UE - Gameplay - Blueprint - Jan 4, 2017

Add a light to a blueprint Move it away from the origin Right click on the component and duplicate it Notice that the new light is now a child of the previous light and that its transform is now in ...

Owner No See option does not correctly apply to widgets using screen space

UE - Editor - UI Systems - Aug 17, 2017

When using the Owner No See option with Widgets, if the widget is set to display on the screen rather than the world, then the option does not affect the widget as intended. Other forms of changing ...

Undoing the pasting of a copied node from the Blueprint Diff tools causes an access violation crash

UE - Gameplay - Blueprint Editor - Aug 24, 2017

The editor crashes with an Access Violation if a node that was copied and pasted from the Blueprint Diff tools is removed via an undo. Regression?: No This issue also occurred in 4.16 Branches tes ...

Planes have a Mesh Distance field exceeds the size of the original mesh

UE - Graphics Features - Sep 20, 2017

Planes have a Mesh Distance field exceeds the size of the original mesh when the value is set to 2. This behavior does not seem intended as the cube does not experience this issue when the value is ...

Set Range Animations imported from 60Hz frametime is halved

Tools - Aug 3, 2018

Reported by a licensee on UDN, this bug is fallout from the fix made for the following Jira:[Link Removed] - Fbx importer: animation range import is broken when importing 60Hz anim The attached ass ...

Editor stalls on Mac after key up, mouse up

UE - Platform - Apple - Dec 19, 2019

UDN user reported a performance hit on Mac with the latest Hotfix release when the user is interacting with the editor either through keyboard or mouse input. This performance hit is noticeable whe ...

Rare assertion comes up when cooking if sequencer camera track has only additive transform track

UE - Anim - Sequencer - Mar 2, 2020

If a camera track has only additive transform track, some functions return uninitialized F3DTransformTrackToken made by default constructor. It causes a rare assertion. Please take a look at F3DTra ...

Undo function breaks local variables in Blueprint Function after compiling

UE - Gameplay - Oct 8, 2020

Blueprint functions appear to correctly associate local variables when renaming the function. However when undoing a rename with ctrl-z the local variables appear to lose their association. Redoing ...

FCableSceneProxy::BuildCableMesh thrashes memory allocator

UE - Simulation - Physics - Feb 12, 2025

FCableSceneProxy::BuildCableMesh in CableComponent.cpp:233 showed up as a hot spot in profiling because the two TArray allocators in SetDynamicData_RenderThread used by BuildCableMesh are created an ...

[CrashReport] Couldn't find Shader TShadowDepthVSVertexShadowDepth_OutputDepthPositionOnly

UE - Graphics Features - Sep 7, 2017

This is a common crash that has occurred since at least 4.16. The one user comment mentions a plugin, but many of the crashes occur on vanilla builds. User DescriptionsVaTexAltlas plugin enabled i ...