Landscape Visibility Mask Rendering with Missing Landscape Components when Deployed to Mobile Device

UE - Graphics Features - Apr 8, 2015

Landscape Material renders with missing components when using a 'Landscape Visibility Mask' and deploying to a mobile device. I have found this issue now with an Android and iOS device. I was able ...

Camera jitter when using Crane Rig with Look At

UE - Anim - Sequencer - Jul 21, 2016

Camera jitter when using Crane Rig with a Cine Camera that is using the Look At Functionality ...

Destructible mesh does not trigger overlap event for objects/pawns that are not moving

UE - Simulation - Physics - Destruction - Dec 12, 2014

DESCRIPTION: When using the generate overlap events for a destructible mesh with Static Mesh or skeletal mesh that is not moving will not generate an overlap event to be triggered. So long as the me ...

MoviePlayer loading screen with FLoadingScreenAttributes::bAllowEngineTick results in high DeltaSeconds tick post-playback

UE - Framework - Feb 16, 2024

IGameMoviePlayer playback of a movie during loading screen lets you set bAllowEngineTick  = true as a parameter. This will make FDefaultGameMoviePlayer manually tick the engine: if (GEngine && bAll ...

Opaque GPU particles appear later than translucent one when Collision module is enabled

UE - Rendering - Architecture - Niagara - Apr 2, 2024

When spawning GPUCompute Sim Niagara system which is consist of opaque particle emitter and translucent one, if those emitters use Collision module, opaque particle often appears one frame later tha ...

Adding new elements to an array in code does not update in a class based blueprint on compile

UE - Gameplay - Blueprint - May 5, 2015

When adding elements to an array inside a code class, blueprint instances of the class do not have their array updated after a hot reload. ...

Collision outcome is different between PIE and Mobile Preview/Packaged Project.

UE - Simulation - Physics - Mar 25, 2015

When playing the user's project in editor vs Packaged, there has been different results for the enemies collision. When playing in PIE, you are able to fly through the enemies with no issues. When p ...

Problem with material layers using interpolator nodes

UE - Rendering - Architecture - Materials - Jun 7, 2024

The Vertex Interpolator Material Expression appears to collapse separate instances from separate Material Layers, leading to visual artifacts when used. Also tested on UE5_Main, CL: 34200103 ...

Invalid DumpGPU capture when ProjectDisplayedTitle contains special utf8 chars

UE - Rendering - Features - Mar 7, 2025

Placing a special UTF-8 character into the "ProjectDisplayedTitle" will result in GPU dumps failing to open. This appears to be because the dump will switch between us-ascii and UTF-16 file formats ...

Packaged project crashes when playing sound from blueprint library with enum input after nativizing blueprints

UE - Gameplay - Blueprint Runtime - Aug 23, 2016

Packaged project crashes when playing sound from blueprint library with enum input after nativizing blueprints. Frequency: 5/5 Notes If nativize blueprints is turned off, the packaged project wor ...