Moving the Material Node for Starter Content Materials within the Editor Graph will increase the Texture Sample Count

UE - Graphics Features - Apr 27, 2016

The issue occurs when you simply move the material node itself and click the 'Apply' button to begin compiling shaders. Once it has completed, the number of texture samples increases for the Stats a ...

[CrashReport] UE4Editor_BlueprintGraph!BlueprintActionFilterImpl::IsEventUnimplementable() [blueprintactionfilter.cpp:588]

UE - Gameplay - Blueprint - Jun 1, 2016

This crash has been reported through the 4.12 Previews and is continuing to occur in the 4.12.0 release. Additional information about this crash is not available at this time, however it may be the ...

Unable to find files in packaged HTML5 build

UE - Platform - Mobile - Jun 16, 2015

Any build after the first fails to start in the browser, this happens with new projects as well. He also included his project on the AnswerHub thread and it's downloaded onto my computer if he delet ...

Remote building for iOS and tvOS does not properly remove files from previous builds causing compile failures

UE - Platform - Mobile - Mar 21, 2017

Remote building for iOS/tvOS is leaving behind generated files which can cause various compile issues when creating different projects in different streams with the same name (MyProject, MyProject1, ...

Compiling a Blueprint class resets the actor label in the World Outliner for all instances of that class.

UE - Editor - Workflow Systems - Aug 19, 2021

Any instances of a Blueprint class that were given a custom label in the World Outliner will have their labels reset to the object instance name whenever that Blueprint class is recompiled. The lab ...

[CrashReport] Crash in PHAT on LeftMouse click while moving ragdoll asset during Simulate

UE - Simulation - Physics - Oct 25, 2017

Crash occurs in the updated Physics Asset Editor if you LeftClick while moving a ragdolled asset during Simulation. This is a regression from 4.17.2 User Descriptionsin the new physics asset edit ...

Packaging for IOS fails using SSH from a Windows Binary Build

UE - Platform - Mobile - Oct 23, 2019

Errors in the log: * Undefined symbols for architecture arm64: * "___isPlatformVersionAtLeast", referenced from: * FMetalResourceHeap::CreateBuffer(unsigned int, unsigned int, unsigned int, mtlpp ...

Cinematic Prestreaming does not work in Shipping Builds

UE - Graphics Features - Jan 9, 2025

When the Cinematic Prestreaming plugin is used to generate and cache Virtual Texture Feedback requests, they work when played back in Unreal Editor. A Licensee has reported that they do not improve ...

AddComponent node fails to be scheduled after adding an "expose on spawn" variable to an ActorComponent-based Blueprint Class.

UE - Gameplay - Blueprint - Nov 13, 2015

If an existing AddComponent node is placed in an Actor Blueprint's Event Graph for a custom ActorComponent-based Blueprint Class, the node will fail to be scheduled after adding a variable marked "E ...

Inherited UserWidgets can't create animations that bind to widgets on their parent's WidgetTree

UE - Editor - UI Systems - UMG - Nov 7, 2022

Animating an inherited widget from a child UserWidget class appears to work, but the bindings don't resolve properly and the animation is null at runtime. This workflow should either be supported, o ...