Unreal Engine Issues
Unreal Engine Issues
Lightmaps on Mobile Devices Appear Dirty and Blurry
UE - Platform - Mobile - Nov 28, 2017When deploying project to a mobile device, the quality of the baked lighting and shadows becomes very poor compared to "Mobile Preview." Lightmaps appear dirty and blurry, with splotches (As shown i ...
[CrashReport] GPUCrash - exiting due to D3D device being lost - D3D Hung - AMD
UE - Graphics Features - May 14, 2019Separating [Link Removed] into Nvidia and AMD tickets.This ticket will house AMD information Exported data on 5/14/2019 with following Query:1 Month Time FrameMajorVersion is 4.22.1Callstack Contai ...
Inconsistent texture loading issue within material editor
UE - Rendering Architecture - Materials - Jul 16, 2025A licensee has reached out via EPS about a texture loading issue they are having in-editor. I summarized the most important points below:The issue relates to texture load failure associated with mat ...
Behavior of configuration file hierarchy is different from document
UE - Foundation - Core - Nov 6, 2015Licensee reported behavior of configuration file hierarchy is different form document here (https://docs.unrealengine.com/latest/INT/Programming/Basics/ConfigurationFiles/index.html) Doc: 1. Engine ...
Static lighting issues with foliage
UE - World Creation - Worldbuilding Tools - Foliage - May 28, 2016The user reports a scene with a reasonable number of foliage instances renders with black lighting: After updating to 4.11 (.1 or .2 doesn't matter) I have not been able to bake my lighting properl ...
Blend Node performs Blend Time after being re-initialized with a different Active Value
OLD - Anim - Jul 10, 2017Setup: Blend by Bool>Slot>Final Pose. Say the bool starts on true. While playing a Montage on the slot, flip the bool value to false. After the montage finishes, the blend node will start on true ...
[CrashReport] UE4Editor_UMG!CastChecked<UUserWidget,UObject>
UE - Anim - Sequencer - Aug 14, 2017This is an early trending crash in the 4.17 release. This may be a regression as there is no initial evidence of this callstack occurring in 4.16. User DescriptionsJust compiled my widget Source C ...
[CrashReport] UE4Editor_SlateCore!SWindow::IsVisible() [swindow.cpp:1320]
Tools - Oct 12, 2017This is a trending crash coming out of the 4.18 previews and 4.18.0. The callstack is similar to a Mac crash that was fixed in 4.16.2 - [Link Removed] User Descriptionswas testing 3rd person temp ...
Reliable subobject creation bunch may overwrite previously received property on the actor
UE - Networking - Jun 21, 2024This seems to occur because of how reliability and the retransmission of dropped data is handled in the engine. If a reliable bunch is dropped, the entire bunch will be resent, but any unreliable bu ...
Calling a parents function that is used in a child blueprint from a spawn actor from class node that is being called back in the parent will cause an error
UE - Gameplay - Blueprint - May 14, 2015If the user calls a function (We will call it "Parent's Function") from a child blueprint and then turns around and tries to call that implementation of the Parent's Function with in the parent it's ...