Adding an output to the default function of a Blueprint Interface now requires the Interface to be compiled in order to change the output's values

UE - Gameplay - Blueprint - Mar 15, 2022

In 4.27 immediately upon adding an output to the default function that output can be edited without needing to be compiled. In Preview 2 once an output is added the Blueprint Interface needs to be c ...

Crash Occurs When Attempting to Pass a Struct Containing an int64 into a Blueprint Function

UE - Gameplay - Blueprint - Feb 17, 2016

Attempting to pass a struct containing a variable of a type that is not compatible with blueprints into a blueprint function causes the editor to crash upon PIE. Found in 4.10.2 binary. Reproduced ...

Interface functions inherited after a duplicated actor blueprint is reparented to the blueprint it was duplicated from cannot be deleted.

UE - Gameplay - Blueprint - Oct 16, 2015

Interface functions inherited after a duplicated actor blueprint is re-parented to the blueprint it was duplicated from cannot be deleted. Note that the inherited function can be deleted in a new ac ...

Translucency Volume are not correctly shadowed in 5.5 without Virtual Shadow Maps and are not light correctly by some lights

UE - Graphics Features - Dec 20, 2024

TranslucencyVolume spheres are not correctly shadowed nor lit in Unreal 5.5 with VSMs disabled. Unreal 5.4 does correctly shade the sphere without VSMs. There appears to be differences in the outpu ...

Can not save Material after copying a Comment into Graph from Material Function

UE - Rendering Architecture - Materials - Aug 29, 2016

When using a material function in a graph with a comment copied from that same material function will cause the material not to save. The error message that pops up says " ...Graph is linked to priv ...

Directional Light settings remain from previous level when creating new level when using forward rendering

UE - Graphics Features - Jun 8, 2018

Using Forward rendering, directional light settings persist across levels and after deletion. Video attached, shows problem in Dev-VR but same issue occurs in Release-4.20 ...

Project fails to package with const BluperintFunctionLibrary function and Nativize Blueprints set

UE - Gameplay - Blueprint Runtime - Dec 8, 2016

If a blueprint function library has a function that is const, the project will fail to compile if Nativize blueprint is set to true. ...

Crash upon adding an Interface to a Blueprint that has a function name that matches the name of a variable in the Blueprint.

UE - Gameplay - Blueprint Compiler - Oct 13, 2017

When you add an Interface to a Blueprint that contains a variable with the same name as one of the Interface's functions, the editor will crash upon compiling the blueprint. In 4.16, this only cause ...

The ReceivedSpectatorClass function in APlayerController may take an incorrect parameter

UE - Gameplay - Jul 7, 2015

The ReceivedSpectatorClass function in APlayerController may have an incorrect parameter. The parameter it takes in is TSubclassOf<AGameMode> SpectatorClass, but this may be intended to be TSubclass ...

Ambient Occlusion does not function with Forward Rendering enabled

UE - Graphics Features - Feb 24, 2021

Ambient Occlusion does not seem to function when enabling Forward Rendering. I tested the level without Forward Shading and could notice a visible difference in the shadows when Ambient Occlusion wa ...