Multiple Blueprint compilation passes required to fix up event binding to dispatcher after event rename

UE - Framework - Blueprint Compiler - Nov 30, 2021

Renaming a custom event bound to an event dispatcher via a Create Event node requires two compilation passes to fix up the binding.  upd. Regression was checked on //UE4/Release-4.26 CL 15973114, i ...

iOS Metal-based build crashes at launch with sub-levels.

Tools - May 16, 2016

Application crashes when deploying a game to iOS with Metal enabled. This has only been reproduced if a sub-level has been added to the starting level within the project. This seems to only happen ...

Error maximum ps_5_0 sampler register index (16) exceeded on some materials in InfiltratorForward

UE - Graphics Features - Dec 13, 2016

Certain materials no longer compile in InfiltratorForward with Forward Shading enabled. These materials were not having this compile issue in //UE4/Main @ CL - 3231640 which is the CL before Dev-Ren ...

Assertion failed: (Index >= 0) & (Index < ArrayNum) when importing large Alembic file

zComponent - Archive - May 3, 2022

Regression testing done on //UE4/Release-4.27.2 CL-18427296 and this issue did occur. [Link Removed] [Link Removed] Below is snips of customers description and proposed workaround:Importing alembi ...

When IOStore is enabled, -createchunkinstall separates out chunk-non-0 pak files but not utoc/ucas files

UE - Core - Data Pipeline - Cooker - Dec 12, 2022

The -createchunkinstall option is used to separate out chunk>0 CDN/patch data from the main packaged app, but when using it with the IOStore enabled, only the pak files are separated out but not the ...

[CrashReport] Crash on FMaterialEditor::OnCanPromoteToParameter()

UE - Rendering - Architecture - Materials - Jun 22, 2017

This is a common crash in the 4.16 release (affecting Windows and Mac). A log file is attached. Users have not provided descriptions so additional information is not currently available. Windows C ...

Crash in Nativized Packaged Game When Overriding Server Event and Calling Parent

UE - Gameplay - Blueprint Runtime - Aug 15, 2017

A crash is occurring in a nativized packaged game when overriding a server event and calling the parent's implementation in a derived class. The crash doesn't seem to produce a detailed callstack. ...

"Distance Field Resolution Scale" in Build Settings is set to 0 by importing assets via "Import into a level"

zComponent - Archive - Mar 18, 2022

"Distance Field Resolution Scale" in Build Settings is set to 0 by importing assets via "Import into a level". That causes not to genarate any distance field meshes of all assets imported via "Imp ...

Movie Render Queue does not render letterboxes to exports with sensor aspect ratios between 16:9 and 1:1

zComponent - Archive - Jul 28, 2021

There is a discrepancy between how Movie Scene Capture (Legacy) and Movie Render Queue handle letterboxing for sensor aspect ratio's that do not match the export resolution, which seems to be a bug ...

Crash when using Share Material Shader Code and Native Metal Libs with r.Shaders.Optimize=0

UE - Rendering - Architecture - RHI - Mar 17, 2020

Using r.Shaders.Optimize=0 with native metal libs results in a crash of the packaged build at runtime. Workarounds is to either not use native metal libs for text shaders or in MetalShaders.cpp co ...