Unreal Engine Issues
Unreal Engine Issues
Invalid GUIDs on new material instance parameters cause overrides to break on base param rename
UE - Rendering Architecture - Materials - Sep 3, 2025When a parameter value is assigned on a newly created material instance (constant or dynamic) using Set***ParameterValueInternal, the parameter’s ExpressionGUID is left invalid (0,0,0,0). Parameter ...
Adding a Reroute node to a function's array output will cause the Function node to be missing the output
UE - Gameplay - Blueprint - Mar 26, 2015Adding a Reroute node to a function's array output will cause the Function node to be missing the output. This seems to be only effecting Arrays. Standard variables work fine. ...
Set Ignore Look Input stacks the resulting value each time it is called
UE - Gameplay - Jan 5, 2015Set Ignore Look Input stacks the resulting value each time it is called. If Set Ignore Look Input is called more than once with the same value, it will take as many calls with the opposite value to ...
Calling SetPhysMaterialOverride in a component's C++ constructor results in a crash when opening a project in the Editor
UE - Simulation - Physics - Aug 1, 2018Attempting to call SetPhysMaterialOverride() in a component's C++ constructor causes the project to crash when opening it in the Editor. ...
Global SkyAtmosphere and Clouds Issues (Cloud Shadows)
UE - Graphics Features - Dec 3, 2024Sampling Cloud Shadows when rendering the Sky Atmosphere can incorrectly assume that the view is located at the planet's North Pole. This causes distortion in the shadows when using a sphere-shaped ...
[CrashReport] UE4Editor-D3D11RHI!VerifyD3D11Result(long,char const *,char const *,unsigned int,ID3D11Device *) [D3D11Util.cpp:249] - FD3D11DynamicRHI::RHICreateStructuredBuffer
UE - Graphics Features - Feb 22, 2019No user comments in crash group Generated from CrashReporter ...
Native default subobjects nulled in child Blueprints on compile
UE - Gameplay - Blueprint Compiler - Oct 25, 2021From reporting UDN: "We had a weird issue with new components added in C++ not being instanced properly on non-direct Blueprint children. It seems to happen if loading of the parent BP is deferred ...
When using Drag and Drop UMG, Projects deployed to devices will crash once the UMG is touched and moved
UE - Editor - UI Systems - Dec 30, 2014When using Drad and Drop UMG with iOS via the information provide in the forum thread, the project will crash on the device it is deployed to when dragging the UMG ...
Implied Decal Blend Modes don't account for static ignore-switch parameters in an expected way
UE - Graphics Features - Sep 28, 2021The desired behavior from a user perspective here is that they'd be able to use Static Switches in a decal master material to toggle different features and behaviors. In the above setup, if I set th ...
OnKeyDown does not function in packaged game
UE - Editor - UI Systems - Jul 17, 2015Pressing down a key for a widget blueprint works in PIE however, it's not functioning once the project is packaged. Project Rar File: [Link Removed] ...