App crashes when executing 'Export to Disk' node on Android

UE - Platform - Mobile - Aug 11, 2020

Regression is unconfirmed ...

A crash can occur when multiple Actors are spawned/destroyed simultaneously with each one loading an asset.

UE - Foundation - Core - Jan 6, 2017

A crash can occur if multiple Actors are spawned/destroyed simultaneously, with each Actor loading an asset when it is spawned. This does not occur 100% of the time, but it does occur quite frequent ...

The Sorting Issue Between Height Fog and Transparent Objects

UE - Graphics Features - Aug 21, 2024

When a LocalFogVolume is used with ExponentialHeightFog, it does not correctly fog translucent objects. ExponentialHeightFog and Volumetric Fog from a LocalFogVolume both correctly occlude transluc ...

Any Alpha value set in a FLinearColor used to draw a line on a Canvas HUD is ignored when the line is drawn

UE - Graphics Features - Apr 21, 2015

If an Alpha value is set in a FLinearColor that is used to draw a line on a Canvas HUD, the Alpha value is ignored when the line is drawn. A comment in BatchedElements.cpp indicates that some legac ...

Hot reload fails in 4.16 projects that were upgraded from 4.15.

UE - Foundation - Cpp Tools - Hot Reload - May 16, 2017

This issue appears to be a continuation of [Link Removed]. Hot reloads work successfully in projects that were created in 4.15 or 4.16 and are still using the same Engine version that they were crea ...

Damping is handled differently at lower frame rates

UE - Gameplay - Aug 3, 2016

Damping is handled differently at lower frame rates. Slight changes in damping at lower FPS (25) drastically effects objects and isn't applied in the same way as at higher FPS (60) User Description ...

Child component reports Parent during On Hit events instead of itself

UE - Simulation - Physics - Solver - Sep 12, 2022

This is a regression tested in //UE4/Release-4.27 cl18319896 Child collision component reports its' Parent during On Hit events instead of itself.  ...

Installed Editor doesn't package the right target if Marketplace plugin are installed before first launch

UE - Platform - Jun 18, 2024

Something is wrong with the TargetInfo.json file generated when they are some Marketplace plugin installed. The client reported this workaround:  Backup the plugins found in Engine\Plugins\Marketp ...

Modules with Emitter Life functioning incorrectly

UE - Graphics Features - Jan 7, 2016

Setting the Emitter Time module with an emitter that is not set to loop will result in an incorrect render of the particles past the emitter duration. Emitter Duration set to 3 seconds:[Image Remov ...

After breaking a level instance without Actor Folders, moving its actors between folders of the world-partition map does not work correctly

UE - World Creation - Worldbuilding Tools - World Partition - Jan 29, 2024

If a standard level (without Actor Folders enabled) is added to a world-partition map (with Actor Folders enabled) as a Level Instance, and then that instance is "broken" so that its actors are inco ...