[CrashReport] Assertion failed: !bIsReentrant - UE4Editor-UnrealEd.dylib!SaveWorld()

UE - Platform - Apple - Jul 27, 2017

This is a common crash on Mac in 4.16 and has occurred since at least 4.14. User DescriptionsI added a character to a blank map and tried to save it. Callstack from LogLogEditorViewport: Clicking ...

Project does not cook with actors containing ModularSynth component

UE - Audio - Sep 11, 2017

A project does not cook with actors containing ModularSynth component. The error is a follows UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: begin: stack for UAT UATHelper: Pack ...

CLONE - Project does not cook with actors containing ModularSynth component

UE - Audio - Sep 13, 2017

A project does not cook with actors containing ModularSynth component. The error is a follows UATHelper: Packaging (Windows (64-bit)): Cook: LogWindows: Error: begin: stack for UAT UATHelper: Pack ...

[CrashReport] UEdGraphSchema_K2::PinHasSplittableStructType

UE - Gameplay - Blueprint - Sep 14, 2017

This crash is affecting a few users in 4.17. ...

Niagara Emitter editor forgets Timeline playback ranges

UE - Niagara - Sep 14, 2020

This seems to only affect an emitter and not a system asset. ...

PlayerController::PlayDynamicForceFeedback called through code does not fire

UE - Gameplay - Input - Feb 25, 2016

Calling PlayDynamicForceFeedback in code does not affect controller rumble. ...

[CrashReport] Linux crash - llvm::TargetLowering::LowerCallTo()

UE - Platform - Linux - Jul 20, 2017

This is a common Linux crash in 4.16.2. ...

Physics Thruster has no effect on destruction mesh

UE - Simulation - Physics - Destruction - Apr 13, 2015

Physics Thruster actor does not affect destruction meshes that it is attached to. ...

Right clicking an actor in the Viewport and using the Place Actor feature is broken on Linux

UE - Platform - Linux - Jul 24, 2017

This happens on both Ubuntu 16.04 and Ubuntu 14.04. ...