Unreal Engine Issues
Unreal Engine Issues
Html5 packaging fails on Windows if the user has HOME env var
UE - Platform - Mobile - Oct 3, 2016If user has HOME env var, Html5 packaging creates .emscripten folder within the location specified by HOME, not the expected intermediate location(like C:\Program Files\Epic Games\4.13\Engine\Interm ...
Cast enum to byte could occasionally break cook/resave in level BP
UE - Gameplay - Blueprint Compiler - Aug 27, 2020Workaround:The blueprint macro had a cast from the enum to an int and that was causing the issue, getting rid of the cast and just returning the enum and then changing all the places that were usin ...
Inherited AnimBP properties not always working across editor restarts
OLD - Anim - Jan 21, 2016In 4.11 when making changes to node properties in an animation blueprint they will not always appear to update in child blueprint instances when restarting the editor. In the attached project the l ...
Attenuation Overrides Reset for Spatialize on Sound Cues after Upgrading to Newer Engine Version
UE - Audio - Nov 17, 2016A user on the AnswerHub has reported that a number of his sounds have had their Attenuation Override settings reset, more specifically the 'Spatialize' setting. I ran a few tests and discovered tha ...
Slate Remote Enable Remove Server option in Project Settings -> Plugins causes editor to freeze and a memory leak
UE - Foundation - Cpp Tools - Plugin System - Sep 13, 2016If a user enables Remove Server in Slate Remote plugin in project settings, the editor will become unresponsive and memory usage will continually climb. Regression: Working in 3039270 (4.12.5 rele ...
Importing static mesh while a PIE session is running permanently breaks nanite on the asset
UE - Editor - Content Pipeline - Import and Export - Mar 12, 2025Importing a Static Mesh during PIE can cause it to never enable Nanite, even if it reports that Nanite is enabled. To re-enable Nanite on the mesh, the asset needs to be deleted and imported again ...
CrossCompileTool module fails to build due to missing include
UE - Graphics Features - Oct 24, 2016The include for VulkanConfiguration.h was added to VulkanBackend.h, which is one of the external dependencies for the CrossCompileTool. This include is not complete however. This results in this mod ...
Building for Gear VR Distribution fails due to missing Oculus lib
UE - Platform - XR - Jun 7, 2017Users have reported that building for Distribution on Gear VR results in failure due to a missing Oculus library. The error they receive is as follows: UATHelper: Packaging (Android (ETC2)): [javac ...
Displaying Revision control history for a file ending in an "undo" of a revision can cause a crash
UE - Editor - Workflow Systems - Jun 18, 2024This crash is caused by how source control history is managed and shown. In this specific case the source control software is Perforce. As written in the repro steps, it can happen to any uasset tha ...
Ensure triggered in FBoundsCacheElement::GetValue when adding ISM instances in Construction Script
UE - AI - Oct 8, 2025An ensure is triggered in FBoundsCacheElement::GetValue when adding instances to an InstancedStaticMeshComponent inside a Blueprint’s Construction Script. This occurs when the ISM component is navig ...