Unreal Engine Issues
Unreal Engine Issues
Jittering appears when setting DOF in ES3.1
UE - Platform - Mobile - Oct 5, 2021For reference, it was fine in 4.24 In particular, jittering is severe when the camera is moving. GaussianHalfRes has been removed in CL 14036168, which is likely to cause degradation issues if int ...
Crash on Event Begin Play with UMG Widget and 2 or More Players
UE - Editor - UI Systems - Feb 25, 2015A player with UMG widget created on BeginPlay works fine when hitting play with only 1 player, but if you set the number of player > 1 it will crash. User believes this is somewhere related with t ...
Splitscreen View2 influences translucency in view 1
UE - Graphics Features - Sep 2, 2021The videos + screenshots in the zip file show the issue on the modified gun sight. The licensee has provided a suggested fix here -[Link Removed] ...
4.6.1 to 4.7 conversion crash "Assertion failed: Pin != nullptr ...K2Node_DynamicCast.cpp]"
UE - Gameplay - Blueprint - Feb 25, 2015Several Users are experiencing crashes on importing a 4.6.1 project into 4.7.0 (Release) Here are the crash reporter links: [Link Removed] [Link Removed] [Link Removed] [Link Removed] [Link Removed ...
Getting Vector Parameter Values from a Dynamic Material Instance with 1 or more vector parameters returns an empty array
UE - Rendering Architecture - Materials - Jan 3, 2023This is not a regression. Tested in //UE5/Release-5.0 CL20979098 The array for Vector Parameters isn't getting populated when called from a Dynamic Material Instance. ...
Enabling Preview Rendering Level Mobile GLES3.1 on Map With Vector Fields Results in Editor Crash
UE - Platform - Mobile - May 21, 2018Reproduced Crash on 4.18.3, 4.19.2, and Main CL 4081612. Licensee states: Based on a quick inspection of the code, it seems FVectorFieldVisualizationVertexFactory::ShouldCache() returns false (req ...
Build crash when enabling r.CreateShadersOnLoad=1
UE - Rendering Architecture - Shaders - Nov 10, 2025When "r.CreateShadersOnLoad" is enabled, cooking will crash due to failure to create a shader. This occurs on //UE5/Release-5.5, CL: 41545209 and //UE5/Release-5.6, CL: 45232827 ...
Crash occurs in Hierarchical Instanced Static Mesh of Mesh with MinLOD set to 1 or higher
UE - Graphics Features - Oct 22, 2020I have attached a reproduction project with the above settings.[Link Removed] It crashes when packaged, launched and moved in-game. This issue seems to occur when there is an object in the Unbuilt ...
Making the viewport fullscreen while Application scale is a value other than 1.0 results in a zoomed in/out viewport
Tools - Jan 11, 2017When using Application Scale in the editor, using F11 to make the viewport fullscreen results in an either zoomed in or zoomed out fullscreen version. Note: This same issue occurs when using a comb ...
UAssetImportTask::bReplaceExisting is not supported with interchange
UE - Editor - Content Pipeline - Import and Export - Aug 25, 2023Add this code to a function you call from a blue utility widget or any other way to start the import with this code.TArray<UAssetImportTask*> ImportTasks; for (int32 i = 0; i < cFC.Files.Num(); i++) ...