Particle record in the Matinee leads to crash when playing after record.

Tools - Oct 19, 2017

Particle record feature in the matinee seems not properly working in the Editor. When trying to play in the matinee with recorded keys, the Engine will crash with Access violation - code c0000005. ...

iOS Show External Login UI Blueprint Node fails on new iOS devices

UE - Online - Jun 6, 2019

I have been trying to test iOS online subsystem functionality for my game and thought that this blueprint node was just broken. This bug will probably catch many UE4 developers that are new to iOS b ...

SetControlRotation does not affect VR

UE - Platform - XR - Oct 1, 2015

Using a Set Control Rotation node does not change the camera rotation when in VR mode. ...

Destructible meshes hang after first bounce

UE - Simulation - Physics - Destruction - Jul 9, 2015

Destructible meshes that bounce lose their momentum, causing them to hang awkwardly midair (see attached video). The issue does not appear to occur for low framerates, and would only repro during sc ...

Level LOD Mesh Generation does not take into account Landscape Component Forced LOD settings

UE - LD & Modeling - Terrain - Landscape - Jan 27, 2016

When you generate a LOD Mesh for a Landscape Level in the Level Browser, the resulting Mesh does not take into account Landscape Components Forced LOD settings. Landscape with Forced LOD Components ...

BP - Class default value is temporary reset after parent c++ class compile.

UE - Foundation - Cpp Tools - Hot Reload - Nov 21, 2017

class default value after c++ class compile will temporary initialized. It will be restored when opening the project again. ...

Using Subversion results in a hanging attempt to sync to source control

Using Subversion on a Mac to connect to an online repository causes the Source Control settings window to hang indefinitely and never succeed in connecting ...

Sound cue will ignore sound mix settings if settings are called in game instance

UE - Audio - May 31, 2017

When using a Game instance to modify the sound in the editor the sound will ignore settings made by game instance. This issue appears to be occurring only in the editor, as running the game in stand ...

The Niagara Staticmesh data interface node Random Tri Coords doesn't respect Emitter's Deterministic Settings

UE - Niagara - Aug 11, 2021

From UDN: We are using the Cascade particle system and we want to render the same scene with multiple cameras, so multiple renders are required. In order to ensure that the result of the particle s ...

Granular Synth Component does not generate sound on non-Force Inline assets

UE - Audio - Mar 7, 2022

Granular Synth Component is not generating a sound as it previously did. ...