Unreal Engine Issues

Enabling Merge GC Clusters and Blueprint Clustering causes a packaged Window project to crash

Enabling the check boxes for Merge GC Clusters and Blueprint Clustering causes packaged Windows projects to crash on startup. The log and dump files regarding this crash have been attached to this t ...

The DefaultSceneRoot's tooltip claims adding a new scene component will automatically replace it as the new root, but this is no longer true

The DefaultSceneRoot's tooltip claims, "Adding a new scene component will automatically replace it as the new root", but this is no longer true in 4.8 and 4.9. Instead, the DefaultSceneRoot remains ...

Rect lights cause visual noise on the light rendered when using raytracing

Rect lights cause visual noise on the light rendered when using raytracing. It is easier to see when you get rid of all other light sources in the scene. I have attached an example project. This se ...

Oculus Go & Quest: Relaunching app immediately after exiting causes device to freeze

4.20 Oculus Go projects cause the device to lock if immediately relaunching after exiting. It does not occur if:You wait ~20 Seconds before relaunchingYou press the power button after closing the a ...

The MainMenu widget isn't loaded when the player returns to the MainMenu map from the InGame menu in Multiplayer Shootout

The MainMenu widget isn't loaded when the player returns to the MainMenu map from the InGame menu in Multiplayer Shootout. This happens in PIE and in a packaged project. Reproduced in 4.8.0 and Mai ...

Performance Drop Occurring During PIE When Blueprint is Open

Having a blueprint open during PIE causes a significant drop in performance. Having multiple blueprints open can almost render more complicated projects unplayable. The user has reported 120 fps wi ...

Detail Panel Favorites cause many settings to be duplicated or shown when they aren't normally

Enabling the "Enable Details Panel Favorites" experimental setting causes some details that were not previously shown to appear. In version 4.18 and onward, it also causes these new details to have ...

IOS deviceCrash when input Korean Charactor on EditableTextBox

UMG Crashes When Using "Create Dynamic Material Instance" With An Optional Name Twice

When using an Optional Name parameter in Create Dynamic Material Instance while using the same Optional Name twice in UMG the engine crashes. I have tested this in a actor blueprint that applies th ...

Editor Periodically Has Performance Drops In Basic Scenes

The Editor experiences performance drops even in the default basic level when left alone running. I experienced them every ~3 seconds. My graph didn't show the drops very clearly so the fps counter ...