On Released fires when holding down a button when using touch (mouse/finger not moving)

UE - Editor - UI Systems - Sep 26, 2017

On Released fires when holding down a button when using touch with the mouse or finger. This happens in mobile preview as well as on devices. As a note, if he mouse is moved before the release auto ...

Impossible to reparent blueprint class that has a broken parent class when using compilation manager

UE - Gameplay - Blueprint Compiler - Dec 8, 2017

Alternatively use BP_ParentClassIsMissingType in QAGame ...

Memory Leak when Debugging Blueprint

UE - Rendering Architecture - RHI - May 2, 2018

RAM usage continually increases when debugger is active https://answers.unrealengine.com/questions/784443/ue-4191-memory-leak-while-using-blueprint-debugger.html ...

Crash when loading iCloud/CloudKit SaveGame on iOS

UE - Platform - Mobile - Jun 5, 2019

"...it seems the crash occurs because it is trying to load an empty (0 byte) save file. Stepping through the code in Engine/Plugins/Online/IOS/OnlineSubsystemIOS/Source/Private/OnlineUserCloudInterf ...

When searching for the "Timespan / float" the Context Sensitive search returns "Timespan * float"

UE - Gameplay - Sep 13, 2019

When searching for the "Timespan / float" the Context Sensitive search returns "Timespan * float". Found in 4.22.3 CL#7053642 Reproduced in 4.23.0 CL#8386587, 4.24.0 Main CL#8671808 ...

DX12 crash by lost device while building PSO

UE - Graphics Features - Sep 22, 2020

It seems to be occurred when exiting fullscreen exclusive mode during the PSO build. And it seems to happen during the loading screen as well as the PSO build. What I suspect is that when focus los ...

Sequencer crashes when using Transform variable added to Scene component BP

UE - Anim - Sequencer - Oct 18, 2021

This issue has not occurred in previous versions and seems to occur from 4.27. ...

[Synth][Tone Generator] - Editor crashes when Starting Synth Component Tone Generator

UE - Audio - Mar 29, 2022

Starting a SynthComponentToneGenerator crashes the editor with the following assert:Assertion failed: bSuccess [File:D:\build\++UE5\Sync\Engine\Source\Runtime\SignalProcessing\Private\AudioBufferDis ...

Depth of field rendering artifacts - flickering and masking

UE - Rendering Architecture - Jan 16, 2024

Flickering and large flashes can be seen on reflective objects that are out of focus with DOF enabled. DumpGPU shows that artifacts are visible in TSR . ...