Fix possible crash if Android audio manager does not support certain properties

UE - Platform - Mobile - Jan 15, 2020

Not checking for a property not being supported by audio manager, need to protect it against NULL ...

[CrashReport] FMacWindow::ApplySizeAndModeChanges | SWindow::Resize()

UE - Platform - Apple - Nov 21, 2017

This is an infrequent Mac crash in the 4.18 release. The callstack is similar to [Link Removed] and originally thought to be part of the same issue, but that Jira has been fixed and many other simi ...

Fix iterative cooks to keep track of CookAdditionalFiles and delete them when the package file that created them is invalidated

UE - Foundation - Data Pipeline - Cooker - Sep 23, 2022

A licensee reports they are using the CookAdditionalFilesOverride function in UObject to add files to the project. This file is properly copied into the Staging area during Packaging, and is appropr ...

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 ...

Make Custom Event names start with "Event"/Fix "Event Event" issue with overridden Events

UE - Gameplay - Blueprint - Dec 17, 2015

If you name an Event something like "Event Foo", overriding the event in a ChildBP gives you "Event Event Foo" To avoid this, please make Custom Event names Start with "Event" ...

App fails to open on Android: Assertion failed referencing LaunchAndroid.cpp:415

UE - Editor - Content Pipeline - Datasmith - Importer - Oct 11, 2018

AR App fails to open on Android: Assertion failed referencing LaunchAndroid.cpp:415 when Unreal Datasmith is installed.10-11 11:22:57.499: D/UE4(18917): LogAndroid: Error: Assertion failed: false [F ...

[Mac][Metal] (Motion Vector) Rendering artifacts with 4.11 on Mac with Accurate Velocities from Vertex Deformation and Selectively output to the GBuffer rendertargets ON

UE - Platform - Apple - Apr 12, 2016

From AnswerHub: Second one is that Motion Vectors are bugged for some objects. This causes lot's of temporal artifacts. Third picture lamp is good example of bug. Lamp is static. Camera is not movin ...