Unreal Engine Issues

Need addElement and addElements to allow single insertion instead of to all elements with matching tag

Since multiple dict tags can be in a plist, not just the top level, need to be able to specify to only insert once. Adding an optional once="true" attribute to these commands in UPL will allow this ...

USDStage - USD Material Overrides not reading

USD material overrides do not get applied properly to a USDStage prim inside UE.     When a material override that is set to a parent prim of USD Material, the override is ignored.   A usd material ...

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 ...

Project packaged on Windows for Linux crashes after exiting on Linux

I noticed this after packaging multiple samples projects on Windows for Linux and running them on my Linux machine. The project exited cleanly, but there was a crash and callstack generated in the ...

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? ...

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. ...

Unresponsive black screen in standalone when enabling HMD w/ Oculus attached

Going fullscreen/stereo on/enableHMD causes a play in standalone to go unresponsive and render as a black screen. Found on: Binary 4.9.2 release (from launcher/portal) UDN: https://udn.unrealengin ...