Inserting before a FSlateImageRun twice will cause crash

UE - Editor - UI Systems - Apr 12, 2019

A crash can occur when multiple Actors are spawned/destroyed simultaneously with each one loading an asset.

UE - Foundation - Core - Jan 6, 2017

A crash can occur if multiple Actors are spawned/destroyed simultaneously, with each Actor loading an asset when it is spawned. This does not occur 100% of the time, but it does occur quite frequent ...

Negate Blueprint Macro Returning Original Value

UE - Gameplay - Blueprint - Sep 21, 2016

The Negate blueprint macros (NegateInt, NegateFloat) are returning the original value. Found in 4.12.5 CL 3039270. Reproduced in 4.13 CL 3106830 and 4.11.2 CL 2946394. ...

Events Still Firing After Stopping Blueprint After Hitting Breakpoint

UE - Gameplay - Blueprint - Nov 4, 2016

After hitting a breakpoint and then stopping the execution of a blueprint using the Stop button, the next event is still being fired. Found in 4.13.2, reproduced in 4.12.5 and 4.14 Preview 2. ...

GEditor->OnBeginObjectMovement only fires on Actors

Tools - Nov 15, 2016

When moving a component of an actor instead of the actor itself, the OnBeginObjectMovement delegate from GEngine is not triggered. It should match the behavior of the actor itself and trigger the de ...

Use Localized Graph Editor Nodes and Pins requires an editor restart to take effect but doesn't prompt for one

Tools - Oct 19, 2016

Changing the Use Localized Graph Editor Nodes and Pins setting requires a restart to take effect but doesn't prompt you to restart the editor as other settings that require one do. Regression?: No ...

Markup in Tutorial Texts Not Being Displayed Correctly

Tools - Sep 19, 2016

Text in the tutorials is not being displayed properly. Instead, the XML markup is being shown as displayed in the attached screenshot. This does not occur in 4.12.5, and is a regression. This occ ...

Max Angular Velocity Value Being Reset

UE - Gameplay - Jun 6, 2016

The value of Max Angular Velocity on a component is being reset after changing the value and compiling the blueprint. Found in 4.12 binary, reproduced in Main CL 2994701. Could not reproduce in 4. ...

Crash with a migrated BP actor using InstancedStaticMeshComponent

UE - Gameplay - Blueprint - Nov 28, 2016

A licensee reported one of their map crashes on open when they tried to migrate from 4.12 to 4.14. There was no crash in 4.13. This seems to be caused by a certain BP actor that adds InstancedStat ...

D3D HUNG crash - FD3D11DynamicRHI::RHIReadSurfaceFloatData()

UE - Graphics Features - Jan 18, 2017

This is one of the widespread D3D Hung crashes that have existed since 4.14. This particular callstack has affected around 300 users. The issue has been successfully reproduced on a home PC. Dxdi ...