CompileAllBlueprints crashing on blueprint function with a delegate input.

UE - Gameplay - Blueprint Compiler - Aug 19, 2022

In some scenarios, FPropertyDelegate::SignatureFunction can point to freed memory after a garbage collection run. This appears to be more common when running the CompileAllBlueprints commandlet. ...

LiDAR assets do not render in after relaunching the engine

UE - Editor - Content Pipeline - Datasmith - Aug 15, 2023

LiDar point clouds are failing to render when saving and relaunching the project This issue is occurring in //UE5/Release-5.3 @ CL 26560699 This issue is occurring in //UE5/Release-5.3 @ CL 2600198 ...

Arithmetic assignment operators (e.g. +=, *=) in Niagara inputs are applied twice .

UE - Niagara - Jan 9, 2024

Arithmetic assignment operators seem to be applied twice when committed in the Niagara stack.  This occurs when entering *= 2.0 for example into a float input. This may be the result of the SNiagar ...

Editor crashes opening MyCharacter BP after converting to 4.5

UE - Gameplay - Blueprint - Nov 4, 2014

On a Mac, when opening a custom character blueprint from a project that has been converted to 4.5 from a previous version of the engine, the engine immediately crashes. ...

Particle Parameter Won't Update If Used With EventReceiver Spawn

UE - Niagara - Jan 26, 2017

Particle Float Parameter for the EventReceiver Spawn doesn't update when accessed via blueprint it just retains whatever default value is assigned in cascade. I've confirmed other modules work as ex ...

Graphical issues in editor after changing monitor resolution on Linux

UE - Platform - Linux - Feb 23, 2017

Changing the monitor resolution on Linux causes Editor windows to show graphic errors. ...

Forward Rendering Lightmap Density view flicker

UE - Graphics Features - Aug 20, 2019

The shaders flicker when in Lightmap Density viewmode after enabling Instanced Stereo Rendering in Project Settings > Engine > Rendering > VR  Tested in 4.21.2 (CL - 4753647) 4.22.3 (CL - 7053647), ...

Coordinate indicator disappears when entering landscape editing mode

Tools - Oct 24, 2016

Coordinate indicator disappears when entering landscape editing mode. The indicator disappears after switching to landscape mode in the editor Note: This appears to work in 4.13.2 ...

8.1 Advanced asset creation selection is flickering a duplicate selection

Tools - Apr 26, 2017

Workaround Seemed that closing and reopening the project resolves this issue This is NOT a regression as it happens in 4.15.2 ...

Volumetric Lightmap Holes Appear Every Fifth Build

UE - Graphics Features - Sep 11, 2018

Volumetric lightmap holes appear every fifth build.  Found in 4.19 CL# 4033788, 4.20 CL# 4302132, and 4.21 CL# 4348893 ...