Base materials in exported Datasmith files imported into Unreal Engine are missing material function.

TM - Interoperability - Nov 19, 2024

Datasmith imports in UE do not render materials due to missing material function. Works in UE 5.6 main but not UE 5.5 or 5.4 ...

Enabling Substrate causes MaterialGraph node previews to render black

UE - Graphics Features - Substrate - Jul 16, 2025

Node previews in MaterialGraph with Substrate enabled render solid black in 5.6. The latest 5.5 engine does render previews correct with substrate enabled. ...

C++ Event Dispatchers target pin cannot be set to actor references

UE - Gameplay - Blueprint - Nov 13, 2014

When connecting C++ created event dispatcher, the Target node will not accept reference to other actors. This is happening in 4.6 and Main but is working as intended in 4.5.1 ...

Adding teleport node after AddMovementInput breaks jumping animation

UE - Gameplay - Jun 6, 2016

Calling the teleport node after the Add Movement Input nodes affects movement by preventing the character's capsule from updating, causing the mesh to hit the top of the capsule during the jump anim ...

Get Hit Result Under Finger by Channel appears to return the wrong location on MAC during PIE

UE - Platform - Apple - May 11, 2018

The location give by the Get hit result under finger by channel appears to be affected by screen size on Mac. When clicking an area in the level, it does not always return the area under the finger ...

Adding a Pass By-Reference input parameter to an event dispatcher is allowed, but causes a warning when called.

UE - Gameplay - Blueprint - Nov 19, 2018

You can add a pass-by-reference input variable to an Event Dispatcher, but it will will result in compile warnings, and changes to that input will not affect the value of the variable in the caller. ...

[Feature Request] ReferenceViewer: Accept dynamic collection

Tools - Oct 29, 2019

In 4.23, Setting a dynamic collection to the collection filter slot does not display any result. And there are no information about dynamic collection doesn't work in collection filter. (FCollectio ...

Cannot hide most Blueprint categories from the Class Settings

UE - Gameplay - Blueprint - Apr 29, 2015

Cannot hide most Blueprint categories from the Class Settings of a bp. x = Cannot hide Actor - Hid-able Add Component - x Add Event - x AI - x Animation - Hid-able Audio - Hid-able Canvas Render T ...

Translucent Materials no longer reflect light when using Forward Lighting variable

UE - Graphics Features - Jun 7, 2016

Translucent materials are no longer showing light reflections in scene when using r.forwardlighting 1 with lights. This is a regression from functionality in 4.11.2. This no longer works with 4.12 ...

Parameter Group Names are lost when assigned in Material Functions

Tools - Jan 26, 2015

Parameters within a Material Function which have a specific Group assigned lose the group information when an Instance is created. Reproduced in 4.7 Preview 4 and Main Promotable-CL-2412886 ...