Unreal Engine Issues

Crash when adding Rectangle Lights to a game with multiple players while Raytracing is enabled

A user reported this issue to us through Salesforce. They initially said it crashed with both Spot Lights and Rectangle Lights, but I was only able to repro with Rectangle lights. Additionally, I di ...

[Synth][Tone Generator] - Editor crashes when Starting Synth Component Tone Generator

Starting a SynthComponentToneGenerator crashes the editor with the following assert:Assertion failed: bSuccess [File:D:\build\++UE5\Sync\Engine\Source\Runtime\SignalProcessing\Private\AudioBufferDis ...

Water_Material crashes editor when adding "Scene Depth Without Water" node

/std:c++17 key is hidden in generated .vcxproj after adding it to the BuildConfiguration.xml

As far as I can tell this is a regression. After including C++17 in the build configuration it shouldn't be hidden in the .vcxproj? ...

Set Members in Struct node doesn't work if the Struct is contained within an Array

Set Members in Struct node doesn't work if the Struct is contained within an Array. ...

Crash occurs when duplicating a State Machine in the My Blueprint panel within an Animation blueprint

This is not a regression. Tested in //UE4/Release-4.27 CL18319896 Crash occurs when duplicating a State Machine in the My Blueprint panel within an Animation blueprint. ...

[CrashReport] UE4Editor_Slate!SMultiBoxWidget::GetCustomizationVisibility() [multibox.cpp:931]

This Jira was created from CrashReports submitted by the public due to the high number of occurrences. Descriptions from users are provided below. Error message: Assertion failed: Result == FPrope ...

Setting max undilated frame time to a negative value crashes the editor

In the world settings of any level, changing the max undilated frame time to a negative number results in the editor crashing. ...

Importing an Alembic File with "Skip Empty Frames at Start of Alembic Sequence" Enabled Causes Crash

Importing an Alembic File with "Skip Empty Frames at the Start of Alembic Sequence" Enabled Causes Crash. Found in 4.20 Preview 5 CL# 4173640 and 4.21 CL# 4207835 ...

GetRandomReachablePointInRadius is displaying non reachable points when radius float values exceed 6000

When creating an Actor, and placing them inside of a geometric obstacle. GetRandomReachablePointInRadius is giving only non reachable points. The behavior happens when we set our navigational mesh b ...