IsEditorOnly Components hidden from Level Viewport

UE - Gameplay - Apr 13, 2018

Components of Static Actors seem to be hidden in the Editor Details panel whenever IsEditorOnly is selected. ...

MDL imported from Substance Source with Datasmith causes a crash

UE - Editor - Content Pipeline - Import and Export - Mar 8, 2019

MDL downloaded from Substance Source causes a crash. This is reported on UDN by an Enterprise customer: https://udn.unrealengine.com/questions/487598/why-would-ue4-is-always-crashing-when-import ...

Memory leaks at changing lighting scenarios

UE - Rendering Architecture - RHI - Aug 26, 2020

The engine does not free the LevelRenderAssetManagers array elements in FRenderAssetStreamingManager when changing lighting scenarios. Following code can avoid this issue. void FRenderAssetStre ...

Deleting transform track can fail to restore state

UE - Anim - Sequencer - Jun 24, 2021

Deleting the transform track for an actor that does not have a transform track by default can fail to restore state if there are no keys.  ...

PNG file import does not read R values correctly

UE - Texture - Aug 22, 2022

Looking at each value of the texture, it seems that the import of the R value is incorrect. PNG:[Link Removed] TGA:[Link Removed] ...

Mesh Particle Collision does not occur when placed in Destructible Meshes

UE - Simulation - Physics - Destruction - Dec 23, 2014

Mesh Type Particles with Collision on World Static and Destructibles will not keep collision when placed into the Effects slot of a Destructible Mesh. ...

Ad banner is displayed incorrectly on Android 7.0 devices

UE - Platform - Mobile - Feb 24, 2017

GameActivity.java needs to be updated to show the ad popup window on Android 7.0 devices. GameActivity.java uses Gravity.BOTTOM or Gravity.TOP to place the ad. One thing to try would be to edit ...

APEX Plugin - Destructible Mesh creation no longer creates/assigns Mesh Material

UE - Simulation - Physics - Destruction - Dec 19, 2018

Destructible mesh material creation no longer creates/assigns DM array element with material from mesh. Workaround: Assign material manually after creating Destructible mesh Confirmed in MAIN @ CL ...

Custom Component class does not show up in Add Component list

UE - Gameplay - Blueprint - Mar 5, 2015

Creating a code component class and marking the UCLASS() macro with meta=(BlueprintSpawnableComponent) does not allow the component to be used inside blueprints. Workaround: Adding ClassGroup=( [Gr ...

DetourCrowdAIController Using Incorrect Nav Agent

UE - AI - May 22, 2017

Pawns using a DetourCrowdAIController do not appear to be using the correct Nav Agent when attempting to move. Setting the AI Controller class to a normal AI Controller allows it to complete the s ...