Any Key input binding does not respond to any key presses

UE - Gameplay - Input - Oct 15, 2015

The input binding "Any Key", which was added in 4.9, does not respond to any key presses. Regression?: No: This feature did not exist before 4.9 ...

Bug in StringTemplate.cpp related to modulo operator in MaterialTemplate.ush (code fix provided)

UE - Rendering - Architecture - Materials - Jun 25, 2024

Shader Template files like MaterialTemplate.ush do not submit previous chunks when encountering a `%` character, unless that `%` character is `%s` or `% {...} `. Because the error is happening ...

DestructibleMesh does not correctly effect vertex color of material.

UE - Simulation - Physics - Destruction - Oct 10, 2017

Destructible Mesh does not correctly affect vertex color. ...

Crash launch application adding .umap url

UE - Foundation - Core - Aug 6, 2020

The application crashes when adding ".umap" to the launch map at application launch. If not specify ".umap", it will be able to launch application. There appears to be a failure to parse the URL. Th ...

SunTemple fails to open on some Android devices.

UE - Platform - Mobile - Jan 16, 2017

This is occurring on device 2888_KindleFireHD8.9" This is a regression from 4.14 ...

FLinearColor ignores Blue in slate code

UE - Editor - UI Systems - Slate - Jan 17, 2017

When FLinearColor is used inside slate code, the third vector value is ignored. This causes FLinearColor(1,1,1) to produce the same color as FLinearColor(1,1,0). This also causes FLinearColor::Blu ...

When ParallelExecutor is enabled, Japanese build output of VisualStudio garbled

UE - Foundation - Cpp Tools - Sep 19, 2018

From UE4.20, Japanese build output of VisualStudio garbled. Below is a comparison between 4.19 and 4.20. ・4.19.2 1>------ すべてのリビルド開始: プロジェクト:MyProject3, 構成:Development_Editor x64 ------ 1> Clea ...

Error launching onto HTML5: "Expression (0) failed in \Engine\Source\Runtime\Core\Private\Async\TaskGraph.cpp:428!"

UE - Platform - Mobile - May 9, 2017

This is launching on to Firefox 53.0.2 (64-bit) and also occurs in Main. Error message:uncaught exception: ASM_CONSTS<@blob:http://localhost:53501/4354ee7b-de4a-419b-b0bc-5d58ff557ed2:1:38655 _emsc ...

Projects crash when launching onto Firefox 64-bit

UE - Platform - Mobile - May 8, 2017

QAGame crashes when it launched onto Firefox. The following exception occurs with the error message:*Expression (0) failed in D:\UE4_Dev-Rendering\Engine\Source\Runtime\Core\Private\Async\TaskGraph ...

When adding the UIRenderer to the Movie Render Queue, the rendering output is a difference in PIE and MRQ.

zComponent - Archive - Dec 5, 2023

UI rendering in PIE and UIrenderer rendering in MRQ produce different output results. This is because when dealing with fades in the UI, the rendering results should not be different.  Workaround ...