MS_VertexAnimationTools_MorphTargets are not deforming and reforming

UE - Graphics Features - Sep 20, 2017

The Material should be contracting and expanding if it is working correctly, but after version 4.16 it is not. Instead it is solid in appearance in the material editor viewport. Below I have linked ...

Unable to create derived classes of UPostProcessComponent

UE - Graphics Features - Jul 5, 2019

Using the Super functions for OnRegister, OnUnregister, Serialize when defining their functionality in a derived class of UPostProcessComponent causes a linker error. Tested in 4.21.2 (CL - 4753647 ...

FirstPersonHUD blueprint does not work when the "FirstPersonBP" folder is renamed

UE - Gameplay - Blueprint - Jul 22, 2015

If the FirstpersonBP folder is renamed for the first person project example the First Person HUD will no longer function. ...

Python cannot spawn object when running in Ueditor-CMD

UE - Editor - Workflow Systems - Dec 7, 2018

It is probably link to the fact the function try to access so GUI object that are not accessible in CMD EditorLevelLibrary.spawn_actor_from_object should work in commandlet ...

Removing instances from HISM using Sequence node for execution in Construction Script behaves differently than ISM

Tools - Dec 17, 2018

When using the Construction Script to remove instances with the Get Instances Overlapping Sphere function to get the references, the behavior of this functionality is different for ISM and HISM if a ...

Sequence onStop does not appear to fire off in a packaged project

UE - Anim - Sequencer - Nov 9, 2016

Sequence onStop does not appear to fire off in a packaged project. The functionality appears to be present in the editor, however this does not appear to be the case after packaging. ...

The Bind Event node created from a blueprint dispatcher is different from the one created from the context menu

UE - Gameplay - Blueprint - Sep 10, 2019

Adding a Bind Event node in different ways can create nodes with identical names (Bind Event to <Dispatcher>), but under the hood they are actually different nodes. Easiest evidence is that they ha ...

Crash when adding a Material Layer with a MaterialFunctionCall node to a Material Instance

UE - Graphics Features - Mar 30, 2021

Adding a Material Layer to a Material Instance that has a Material Function Call node connected to the Set Material Attributes node causes the editor to crash. I tested a Material Layer without the ...

IgnoreComponents array is not properly populated when called recursively on a destructible mesh

UE - Simulation - Physics - Destruction - Apr 5, 2016

Using a recursive line trace function to populate the IgnoredComponents array does not properly identify each component of a destructible mesh to be ignored. ...

[CrashReport] UE4Editor_Core!FFileHandleWindows::Seek() [windowsplatformfile.cpp:501]

UE - Foundation - Core - Aug 29, 2017

This is common crash coming out of the 4.17 and 4.18 releases. The callstack is similar to an old unresolved import crash: [Link Removed] User Descriptionsrebuilding lightbuilding lighting from a d ...