Native interface events are not callable by default, which differs from native interface *function* implementations.

UE - Gameplay - Blueprint - Sep 11, 2015

Since we implicitly create new function graphs for non-event functions when an interface is implemented, that code path marks the function as callable by default. In other words it's not required to ...

Disabling Shadow Denoiser causes raytraced shadows from Rect Lights to disappear

UE - Graphics Features - Lumen - Nov 6, 2020

Disabling Shadow Denoiser causes raytraced shadows from Rect Lights to disappear ...

Converting a function with local variables to an event crashes editor

UE - Gameplay - Blueprint - Dec 9, 2020

When converting a function with a local variable to an event, editor crashes. Issue does not occur in 4.25, therefore a regression. ...

Local Position Material Function failing to compile when Packaging for HTML5

UE - Platform - Mobile - Mar 25, 2016

After some extensive testing, I could not find any reason why the material function LocalPosition node was failing to compile and defaulting to the world grid material when Packaging for HTML5. I a ...

LIVE: RENDERING: Movable Mesh does not receive shadows from Static meshes in static or stationary lighting

UE - Graphics Features - Apr 30, 2014

---------------------------------------------------------------------------------------------------------------------- Build: 4.1.0-2057451 Description: Movable meshes and blueprints set to cast n ...

Typo in Lighting Level for Min Roughness

Docs - Samples - Dec 29, 2014

Within the "Lighting' level of the 'Content Examples' project, example 5.4 should say 'Min Roughness' instead of 'Source Radius' ...

A Function whose declaration is in a platform specific "If" block cannot be bound to a delegate

UE - Foundation - Core - Jun 3, 2016

Functions whose definition is in a platform specific "if" block cannot be bound to a delegate and also causes an assert when beginning to play in PIE for the first time since compiling, but the asse ...

Play Media Player Node Causes Blueprint Functions to be Uncallable

UE - Gameplay - Blueprint - Feb 23, 2016

This only occurs in standalone or a packaged game Having a Play Media Player node in a blueprint causes all of that blueprint's functions to become uncallable. Found in 4.11 Preview 5. Reproduced ...

Changing Area Light Settings In Blueprint Causes Crash

OLD - Enterprise - Aug 27, 2018

Changing area light settings in blueprint will Cause a crash. Found in 4.20 CL# 4302132 and 4.21 CL# 4307852 Unable to test in 4.19 due to provided project being in 4.20 ...

UHT fails when building in VS if a function tries to return a UEnum pointer

UE - Foundation - Cpp Tools - UnrealHeaderTool - Mar 7, 2018

UHT will fail during build in Visual Studio if a function tries to return a UEnum pointer. Adding a valid keyword before the return type will compile successfully. ...