Subobject pointer may be null when attempting to access a nested BP added property in a BP script or python

UE - Gameplay - Blueprint - Mar 3, 2023

This is likely something going wrong in the Blueprint Editor utilities function calls or something like that. Obviously this works as expected in the Subobject Editor itself, otherwise no nested BP ...

PlayLevel PlayStandaloneLocalPc( ) appears to be calling UE4Editor from engine binaries which can prevent game specific scripts from loading

Tools - Sep 26, 2016

PlayStandaloneLocalPc is used when user launches Standalone Game from editor, which loads the .uproject from UE4Editor in Engine binaries instead of loading project from project binaries. ...

Hitting a breakpoint in widget blueprint while running PIE with Selected Viewport mode blocks entire editor rendering

UE - Editor - UI Systems - UMG - Oct 6, 2023

This problem does not occur when running PIE with New Editor Window mode. ...

Linux server builds of 4.24.0 failing due to Text3D plugin's dependencies on FreeType2 and HarfBuzz

UE - Platform - Linux - Jan 31, 2020

The build error is descriptive. FreeType2.Build.cs and HarfBuzz.Build.cs explicitly check if they are being used for a Unix server build and throw exceptions to prevent that. Commenting out those ex ...

Unable to build marketplace code plug-in

UE - Foundation - Cpp Tools - UnrealBuildTool - May 17, 2022

Fix for [Link Removed] sets the RuleAssembly in the Marketplace plugin to ReadOnly. This has prevented the plugin binaries from being compiled. Change the readonly flag as shown in the following co ...

Shadows tessellation are Z-Fighting in Template project with Mobile Rendering

UE - Platform - Mobile - Nov 8, 2016

I noticed that the shadow on orange blocks were sometimes on the front of the block and sometimes on the side of the blocks. Sometimes the shadow wouldn't render at all. ...

Niagara - "Make Static" nodes do not seem to be working correctly.

UE - Niagara - Apr 7, 2025

When a "Make Static" node is used in a Niagara Function Script or Niagara Module Script to supply the input value for a Static Switch Selector or, a Function Parameter, or a Function Parameter Defau ...

AdditionalPluginDirectories when set are not reflected in generated projects

UE - Foundation - Cpp Tools - UnrealBuildTool - Jan 3, 2023

Bug report viaUDN: We have some plugins that we'd like to share between projects, that we don't want to maintain multiple copies of. The AdditionalPluginsDirectories option for Project's solves tha ...