Unreal Engine Issues
Unreal Engine Issues
Attempting to set a new PIE window to Windowed Fullscreen mode causes both the new PIE window and the original Editor window to freeze and stop accepting input
UE - Platform - Apple - Dec 24, 2018When starting PIE in a New Editor Window on a Mac, the both the new window and original Editor window will freeze and stop responding to inputs if an attempt is made to change the window to Windowed ...
NormalizePackageNames() should interpret 'exclude developer folders' to also exclude packages in ExternalActors and ExternalObjects
UE - CoreTech - Oct 14, 2022In NormalizePackageNames() (PackageUtilities.cpp), there is a PackageFilter parameter, which can be set to exclude developer packages (NORMALIZE_ExcludeDeveloperPackages). The code only checks the b ...
Disabling Grid ShowFlag also hides billboard sprites and volume outlines
UE - Graphics Features - Nov 8, 2023The following odd behavior did not happen until UE 5.2, but happens in the latest UE 5.3. When the "Grid" show flag is disabled in the Level Editor Viewport, all billboard sprites and volume outlin ...
MRQ GBuffer Output Renders Normal GBuffer instead of BaseColor
UE - Virtual Production - Tools - MRQ - Feb 27, 2025When attempting to use console variables to render the BaseColor output, the GBuffer overview or GBuffer normal output is rendered instead. Using the commands in the Editor viewport shows the BaseC ...
In 5.7, a Sequencer that contains a Spawnable ChaosCacheManager will crash the Engine on EndPlay
UE - Simulation - Core - Nov 30, 2025In 5.7, a Sequencer that contains a Spawnable ChaosCacheManager will crash the Engine on EndPlay. The licensee has reported, and I've confirmed, that this behavior started in 5.7. I've confirmed thi ...
Subsurface Profile Materials That Are Illuminated By Particle Lights Render White
UE - Graphics Features - Feb 9, 2017Due to the changes made to subsurface profile (implementation of full resolution skin shading) it now renders white or with heavily faded base colors under certain conditions. In this case it is wh ...
Warnings (TEnumAsByte is not intended for use with enum) when packaging with Blueprint Nativization method set to Inclusive
UE - Gameplay - Blueprint Compiler - Feb 16, 2017User gets the warning below after trying to package a new VR template if Blueprint Nativization is set to "Inclusive" Warning: "THelper: Packaging (Windows (64-bit)): xgConsole: c:\program files (x ...
Duplicating Level With Large _BuiltData File Results in Editor Crash
UE - Foundation - Core - Jun 7, 2018Trying to duplicate a level in the editor that has a large _BuiltData file results in a crash. In the case of the supplied test level, it is over 3 GB. Crash repros in 4.19.2 and Main (CL 4115885). ...
Navmesh seems to have buggy behavior when interacting with HISMCs that programmatically set mesh via SetStaticMesh.
UE - AI - Mar 6, 2020Both versions works correctly if HISMC is pre-placed (generated in ConstructionScript). Only when generated dynamically does it fails. The Navmesh isn't being updated after SetStaticMesh and AddInst ...
Android launch images change size while onscreen
UE - Platform - Mobile - May 4, 2020This was reproduced both in Match 3 and a new BP project with a custom launch image. Note that on Pixel 2 the BP project behaves a little differently than Match3. It displays in full size, then s ...