Unreal Engine Issues
Unreal Engine Issues
UInstancedStaticMeshComponentRemoveInstances crashes if called with an empty array
This looks like it can be fixed with an early-out when the passed array of indices is empty. Log:[2024.01.03-16.38.36:091][291]LogOutputDevice: Warning: Script Stack (1 frames) : /Game/BP_Crashy.B ...
If user set ChunkID to a higher value, UpdateManagementDatabase will be very slow
UE - Gameplay - Sep 4, 2018If user set ChunkID to a high value, the construction process of the database managed by AssetMAnager becomes very long. The cause is the following code in UChunkDependencyInfo :: BuildChunkDepende ...
The Find Node Can Crash on Compile After a Blueprint Compile Error
UE - Gameplay - Nov 21, 2019The "Find" node can cause a crash if the a map with a struct value changes type while connected, is disconnected and reconnected. Compilation fails and crashes the engine. Found in 4.23.1 CL#963142 ...
Subobject ComponentClass overrides cause failing assertions due to UObject reconstruction on AsyncLoadingThread
UE - Framework - dSTM - Dec 19, 2025Context The blueprint editor allows you to override an actor component's class in derived blueprints (component details panel -> Component Class). [Image Removed] Problem When a blueprint and it ...
Regression - Nested scene component subobjects are no longer being registered when the owning scene component is added to an existing Actor instance as an instanced component.
UE - Gameplay - Components - Nov 16, 2016This is a regression that was introduced with changes made to address issues with native vs. non-native component registration at Blueprint construction time ([Link Removed]). Prior to those change ...
Suspension CoM calculations don't update with mass.
UE - Simulation - Physics - Dec 15, 2016UWheeledVehicleComponent calculates the Suspension settings only when the physics state is first created. When CoM is set through the editor, the vehicle is constructed with the appropriate offset ...
The Preferred Accessor setting in the Editor Preferences window only sets the setting for the current project instead of all projects using that Editor
Tools - Apr 24, 2017Selecting Visual Studio 2017 as the preferred Source Code Editor in the Editor Preferences window only sets that preference for the current project, instead of making it a setting for any project us ...
Returning the value of a Transform as a String has a missing colon after Scale
UE - Gameplay - Sep 26, 2022This is NOT a regression. Tested In //UE4/Release-4.27 at CL18319896 Printing an actor's transform as a string returns transform and rotation with a colon, but returns scale without. ...
SteamVRAssetManager color format mismatch
UE - Platform - XR - May 23, 2018User requests that TSF_BGRA8 in SteamVRAssetManager.cpp be changed to TSF_RGBA8 to match OpenVR API https://github.com/ValveSoftware/openvr/wiki/IVRRenderModels::LoadRenderModel SteamVRAssetManage ...
Unable to Import Alembic Files in UE4
UE - Editor - Content Pipeline - Import and Export - Feb 25, 2020We have written a plugin for UE4 that allows Unreal users to import and set up Megascans assets into Unreal Engine. Recently we added Alembic files to our assets and also updated all our plugins to ...