Using a Shading Model node set to Unlit results in an invalid material with FromExpression domain

UE - Rendering Architecture - Materials - Feb 29, 2024

Create a materialSet its domain to From ExpressionRecreate the node graph as in the screenshot Note that the preview sphere is black. ...

Compile error when opening a project on child blueprint calling parent blueprint event

UE - Gameplay - Blueprint - Sep 8, 2015

child blueprints calling functions from parent blueprints generate compile errors upon opening project and pressing compile within the child blueprint. Workaround: Open parent blueprint and comp ...

Cannot place static mesh in location if foliage mesh is already placed in same location

UE - World Creation - Worldbuilding Tools - Foliage - May 12, 2015

If a foliage object is already placed in level at a location, it will delete any static mesh that is placed in the same location. ...

Changing the names of inputs in a collapsed graph can change connected inputs in other collapsed nodes

UE - Gameplay - Blueprint - Mar 15, 2015

Changing the names of inputs in a collapsed graph can change connected inputs in other collapsed nodes. Reproduced in 4.7.2 binary and Main (//depot/UE4/Promotable-CL-2478413) ...

Local variables do not appear in the context menu inside collapsed graphs

UE - Gameplay - Blueprint - May 21, 2015

Local variables do not appear in the context menu inside collapsed graphs. They can still be dragged into the graph. Reproduced in 4.8 Preview 3 and Main (//depot/UE4/Promotable-CL-2560501) ...

Graphics failure when pasting code for a BP node into Color Picker Hex field

Tools - Sep 11, 2015

Graphics failure when pasting code for a BP node into Color Picker Hex field Does not occur in 4.8.3 ...

Getting a TextBlock variable from the Return Value of a Create Widget node inside a Player Controller will cancel all the nodes before it in Standalone

UE - Gameplay - Blueprint - May 15, 2015

Getting a TextBlock variable from the Return Value of a Create Widget node inside a Player Controller will cancel all the nodes before it in Standalone. Does not occur in other PIE modes, and does n ...

Invalid object while verifying cluster assumptions during ShooterGame replay with matinee actor

UE - Anim - Sequencer - Apr 21, 2021

This seems to be caused by the matinee actor on Highrise and only appears to be reproducible in a packaged build of ShooterGame, not from the editor. See attached UDN for more information. ...

Texturing: RC 1.5 texturing hangs, RC 1.4.2 works fine with same dataset and workflow

RC - Texturing - Feb 13, 2025

Tested on the provided project, it looks like the unwrap was provided, but then the process stuck. I also checked the Task manager and there wasn't almost any activity for RealityCapture.[Image Remo ...

Blueprint Break on Exceptions does not work with Accessed None errors

UE - Gameplay - Blueprint - Jan 14, 2015

The experimental feature Blueprint Break on Exceptions does not work with Accessed None errors. To test, create an actor variable in a blueprint and use it as an input to a function without having s ...