Crash Occurs When Attempting to Pass a Struct Containing an int64 into a Blueprint Function

UE - Gameplay - Blueprint - Feb 17, 2016

Attempting to pass a struct containing a variable of a type that is not compatible with blueprints into a blueprint function causes the editor to crash upon PIE. Found in 4.10.2 binary. Reproduced ...

Binary-only plugins are not usable without including .build.cs files

UE - Foundation - Cpp Tools - UnrealBuildTool - Jan 22, 2015

We should support not having a source directory at all, unless the plugin needs to be linked against. Related to [Link Removed]. See also: https://forums.unrealengine.com/showthread.php?53710-Prebu ...

ContentExamples: PhysicalAnimation Example 1.2 the P in "BluePrint" is capitalized

Docs - Samples - Jan 19, 2017

The P in "BluePrint" is capitalized in Example 1.2 of PhysicsAnimation level. The word Blueprint should match the documentation https://docs.unrealengine.com/latest/INT/Engine/Blueprints/index.htm ...

Unable to connect to Pixel Streaming when using FireFox

PixelStreaming - Sep 11, 2019

It appears that Pixel streaming does not currently work with the Mozilla Firefox web browser Docs link: https://docs.unrealengine.com/en-US/Platforms/PixelStreaming/PixelStreamingIntro/index.html ...

Compilation fails after binding an event to a server-only delegate property in the Blueprint editor.

UE - Gameplay - Blueprint Editor - May 24, 2019

Attempting to bind a custom event to a server-only delegate property currently fails to validate after compiling a Blueprint. ...

Unable to open UE4Editor on Linux - Bad hlslcc header found

UE - Platform - Linux - Nov 4, 2015

UE4Editor does not open on Ubuntu 15.10 due to the following error: [2015.11.04-16.19.35:974][ 0]LogOpenGLShaderCompiler:Error: Bad hlslcc header found! Missing '#'!Error in `./UE4Editor': free(): ...

Lightmaps not carrying over with 'Save Current As'

UE - Graphics Features - Lumen - Jul 17, 2020

I can reproduce it, other developers reported to me too.  Not a problem in 4.22 ...

Volumetric fog black and not updating with real-time capture skylight

UE - Rendering Architecture - Oct 20, 2023

It looks like the skylight is not updating the CPU side SH values when Real Time Capture is enabled, and thus old/empty values are sent to the fog. ...

Static mesh component reports relative transform as world transform when Physics is enabled

UE - Gameplay - May 3, 2016

If a static mesh component has Simulate Physics enabled, GetRelativeTransform() returns the value of world transform. ...

If the user uses a web browser widget in combination with a custom cursor a pointer hand will appear

Tools - Feb 1, 2016

If the user enables the Web browser widget and tries to use a custom pointer their custom mouse will appear, however it will be accompanied by a pointer hand. Additional information: Once the cust ...