A crash in editor will result after swapping inherited SCS component names at the parent class level before loading a child class that overrides them.

UE - Gameplay - Blueprint - Oct 26, 2018

This is an editor-only crash that's due to stack overflow/infinite recursion in UInheritableComponentHandler::FixComponentTemplateName(). We are recursively trying to rename other inherited componen ...

Sound Quality is worse after import

UE - Audio - Feb 17, 2020

After importing a sound file, it's sonic characteristics are changed and the sound is not the same as the original. This leads to inconsistency. The sound is the same with Compression set 100. Two ...

Calling Finish Recording Output causes a crash in PIE

UE - Audio - Mar 23, 2020

The Finish Recording Output node from the Audio Mixer BP Library crashes due to an invalid Path input. This is a regression from 4.23.1 (CL-9631420).  This was reported and tested in 4.24.3 (CL-115 ...

Sequencer Media Tracks trigger crash when an ImageSource is added

Media Framework - Jun 18, 2020

The same callstack appears in 4.24.3 (CL-11590370) but only when playing a Sequence with a Media Track that has a ImgMediaSource and Media Texture set on it. These repro steps work for 4.25 and 4.26 ...

High Precision Tangent Basis & Use Full Precision UVs on Skeletal Meshes reset after reimport

UE - Editor - Content Pipeline - Datasmith - Importer - Sep 17, 2020

Reimporting a skeletal mesh causes "use high precision tangent basis" & "use full precision UVs" to reset and no longer being applied to the mesh. Reported and tested in version 4.25.3(CL 13942748) ...

BuildPatchTool doesn't finish if enabled building Http Chunk on Mac

Portal - Jan 25, 2021

We may fix this issue by the following codes. FPakPlatformFile::FPakPlatformFile(): LowerLevel(NULL) ,bSigned(false) { // remove //FCoreDelegates::GetRegisterEncryptionKeyMulticas ...

Nvidia Graphics Drivers cause editor menus to flicker and disappear after using the editor for an extended period of time

UE - Graphics Features - Apr 16, 2021

This issue seems to be occurring on a variety of Nvidia cards. So far, I haven't seen any indication that it is affecting AMD graphics cards. The majority of the reports have indicating that the pro ...

Standalone Material Function Instance creation results in crash

UE - Rendering Architecture - Materials - Mar 2, 2023

Coming from UDN https://udn.unrealengine.com/s/case/5004z00001mDBzzAAG/material-instance-asset-creation-workflows?fromCase=1 Either standalone MFI creation should work just like MaterialInstances, ...

Enhanced Input Axis Actions repeatedly firing the last input value when entering a Common UI menu

UE - Gameplay - Input - Sep 7, 2023

When using an axis mapped input action such as looking around with a gamepad joystick, then opening a Common UI menu, the last input axis value will keep firing irrespective of the current joystick ...

Landscape is missing its material when running a packaged project on Linux arm 64

UE - LD & Modeling - Terrain - Landscape - Apr 22, 2024

From licensee: The project contains a small flat terrain with a basic material attached to it - just a single texture sampler connected to the base color output. Also in the project is a skeletal m ...