App fails to open on Android: Assertion failed referencing LaunchAndroid.cpp:415

UE - Editor - Content Pipeline - Datasmith - Importer - Oct 11, 2018

AR App fails to open on Android: Assertion failed referencing LaunchAndroid.cpp:415 when Unreal Datasmith is installed.10-11 11:22:57.499: D/UE4(18917): LogAndroid: Error: Assertion failed: false [F ...

[Mac][Metal] (Motion Vector) Rendering artifacts with 4.11 on Mac with Accurate Velocities from Vertex Deformation and Selectively output to the GBuffer rendertargets ON

UE - Platform - Apple - Apr 12, 2016

From AnswerHub: Second one is that Motion Vectors are bugged for some objects. This causes lot's of temporal artifacts. Third picture lamp is good example of bug. Lamp is static. Camera is not movin ...

[Metal-Epic:Tools] Compiling Metal 2.0 shaders on XCode 9.3 beta with desktop forward selected fails on iOS

UE - Graphics Features - Mar 30, 2018

Shaders fail to compile with a series of cube map errors (subset below): LogShaderCompilers: Warning: 17 Shader compiler errors compiling global shaders for platform SF_METAL_MRT:   LogShaderComp ...

Foliage icons do not grey out when set to inactive

UE - World Creation - Worldbuilding Tools - Foliage - May 16, 2016

Foliage icons do not grey out when set to inactive through the foliage mode window. Note This error occurs in 4.11 and 4.12, but is responding as expected in 4.10.4 (icon is greyed out) Regressi ...

Importing Heightmap to Landscape Crashes Editor

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

Importing a .png as a heightmap crashes the editor. No crash callstack is provided Frequency: 2/7 Regression (yes) issue (does not) occur in 4.11.2 Crashreporter N/A Note Attached are logs and a ...

Attempting to apply instance changes to blueprint after altering a struct array crashes editor

UE - Gameplay - Blueprint - Dec 14, 2015

Editor crashes if a struct array that has been made editable is edited in an instance within the details pane of the level viewport, then the changes are applied from the instance to the base bluepr ...

Refraction does not display properly on Android devices

UE - Platform - Mobile - Apr 2, 2019

A user has reported that Refraction does not affect Translucent or Masked materials at all on Android. It is also limited in how much it affects Opaque materials. Regression?: No This has been test ...

Marketplace plugins "missing precompiled manifest" on Mac

UE - Platform - Apple - Oct 12, 2021

Summary This issue was reported by a licensee via UDN. It appears that all of the plugins generate a "missing precompiled manifest" error when packaging a project on Mac in UE4.26.2.Licensee Platfor ...

UIpNetDriver::ProcesRemoteFunction warnings appear for ShooterGame clients when switching weapons

UE - Networking - Nov 5, 2015

The following warnings appear in the output log for ShooterGame clients when switching weapons. [2015.11.05-19.41.11:550][253]LogNet:Warning: UIpNetDriver::ProcesRemoteFunction: No owning connectio ...