When asynchronously loading levels using the "Async Load Primary Asset" node, the dirty flag of the loaded level becomes Enable

UE - Gameplay - Jul 26, 2018

Asynchronously loading a level that has one or more Actors using the "Async Load Primary Asset" node will enable dirty grug for that level asset. The cause is a modified code(CL-3764602) for the [L ...

Changing Levels Does't Clear Global DistanceField

UE - Graphics Features - Dec 5, 2018

In a packaged game or standalone, if you change map with DFAO enabled the previous DFAO will still be visible. This does not occur in PIE. Found in 4.19 CL# 4033788, 4.20 CL# 4369336, 4.21 CL# 4613 ...

Incorrect error icon on stationary lights in a sublevel when the sublevel is first added

UE - Graphics Features - Jun 26, 2024

When you add a level with stationary lights to another level as a sublevel they will show a first error icon on the lights. Once you close the project or refresh the level this icon is shown as nor ...

Cannot compile project with dedicated server in 4.8

UE - Networking - Jun 23, 2015

If a project has built a dedicated server executable then it will fail when trying to convert the project from 4.7.6 to 4.8. EDIT: Following the steps on the wiki page for Dedicated Servers () in 4 ...

Landscape components not returning physical material with LineTrace in Editor mode

UE - Simulation - Physics - Query - Sep 13, 2023

The OutHit from a LineTraceByChannel against a landscape in Editor is not returning the Physical Material of that landscape. While PIE there is no issue. While using BoxTrace (even in Editor) there ...

Details panel for Actor Component is blank in any Blueprint that derives from a code class using that Actor Component after the Actor Component's class name is changed

UE - Gameplay - Blueprint - Dec 20, 2018

Changing the name of an Actor Component code class in a project results in any existing Blueprints that derive from code classes that use that Actor Component to not display the Actor Component's pr ...

Colored Lights On Edge Of Screen In Cascade Preview Window

UE - Niagara - Dec 20, 2016

While working in cascade (also in editor) with particles or stronger emissive values, glowing lights will appear at the edge of the screen. Note With bugs like this they seem to be tied to Radeon C ...

Character Upon Landing On Moving Platform Has Odd Physics Behavior

UE - Simulation - Physics - Nov 2, 2016

The character gets pushed in the same direction that the platform is moving upon landing. This can be corrected by increasing the braking friction factor however, the user believes the behavior is s ...

Textures are Blurry when Scaling an Actor While r.Streaming.DropMips is Set to 2

UE - Graphics Features - Jul 17, 2019

If a BP actor containing textured static meshes starts with a small transform scale, when scaled up, the texture streamer fails to load in the higher mips and the texture looks blurry. Working as e ...

Delete Unused Variables deletes variables used in Child Blueprints

UE - Gameplay - Blueprint - Dec 30, 2014

[NickW] Should perform a search in children, at least warn if this will break children. — Delete Unused Variables deletes variables used in Child Blueprints. Note: Not only child blueprints. If ...