Unreal Engine Issues

Oculus mirror window goes black when headset removed for any mirroring mode besides 0

If using any hmd mirroring mode besides 0 on Oculus, when the headset is removed, the mirroring window goes black in a packaged build, or in -game, for example: UE4Editor.exe VrTemplate4x15 MotionCo ...

Precomputed AO Masks cannot be used to LERP between Normal Maps

When using the Precomputed AO Map node to LERP between 2 Normals, only the A input into LERP will render out on the mesh. The Precomputed AO will work fine for Base Color LERPs Example: [Image Re ...

Compile error packaging QAGame with nativization on Mac

QAGame is failing to compile with Blueprint Nativization turned on ...

Editor Scalability Settings cannot be set per project

Initial setup of PostProcessQuality in the Editor .ini files does not actual change the setting. The project must be opened once and then closed in order for the settings to take effect. ...

GetKnownPerceivedActors doesn't stop calling when specified AISense should be forgotten

There is a difference in implementation and set of checks that are made in GetKnownPerceivedActors() depending on if you use specific SenseClass or leave it as nullptr (so it will return info for al ...

Crash on packaged game. 4.23 will not nativize a class that creates instanced properties inside itself

Description from the user: up to 4.23 properties nativize normally if they are written in C++ with the Instanced specifier. The discerning difference is that that there was no Blueprint Class itsel ...

Animation Curve name changes when retargeting Skeleton

The name of Animation Curve may change when retargeting an asset that depends on AnimSequence asset to Skeleton with different order of Animation Curve. ...

Lumen causing exposure issues when several viewports are opened

Calling functions that have an implicit WorldContextObject parameter in a Blueprint function library will give a compile error about a missing __WorldContext pin

Calling functions that have an implicit WorldContextObject parameter (line trace, execute console command, etc) in a Blueprint function library will give a compile error about a missing __WorldConte ...

Using a custom #define as the condition for a UFUNCTION's declaration will cause the function to not show in blueprints

Using a custom #define as the coniditon for an #if / #endif that encapsulates a UFUNCTION that is marked as BlueprintCallable will prevent it from being visible in blueprints despite the #if resolvi ...