Renaming a material isn't reflected in the Static Mesh Editor until it is closed and reopened

Tools - Mar 21, 2017

Renaming a material isn't reflected in the Static Mesh Editor until it is closed and reopened. User Description: Let's have imported static mesh with material. Then select material using "Browse t ...

Incorrect collision of merged actor that was merged from a Spline Mesh Component

UE - Simulation - Physics - Apr 10, 2017

Incorrect collision of merged actor that was merged from a Spline Mesh Component Licensee description: We often use spline mesh blueprints to generate organic art for us, like roots, trees, and r ...

Crash when attempting to revert a Child blueprint from overriding its parent's function while it also has a child of its own

Tools - Dec 4, 2017

When reverting the change of overriding a function from a blueprint's parent, the editor will crash if that blueprint has a child of its own. Regression?: No This also occurred in 4.16 ...

Crash reimporting Skeletal Mesh that has an extremely high amount of LODs

Tools - Nov 14, 2017

I have attached the project I used to repro this as well. All you should need to do is reimport twice on the untitled skeletal mesh and it should crash ...

User created constraints have a default joint name of "UserConstraint" that cannot be edited

UE - Simulation - Physics - Dec 6, 2018

Constraints created by users are all given the same Joint Name of "UserConstraint" and it cannot be edited. This makes referencing these joints individually impossible. Regression?: No This occurs ...

Deleting animation key values of ParagonKhaimera's 1D BlendSpace while the animation is previewing in Animation Editor will result in Engine crash

OLD - Anim - Jan 30, 2019

Deleting ParagonKhaimera BlendSpace 1D key values while the animation is previewing in Animation Editor will result in Engine crash. ...

Empty Mesh Sections with MergeActors Tool

UE - World Creation - Worldbuilding Tools - HLOD - Sep 27, 2019

Map Check will output the following error, which makes no sense: SM_FourCubes_1 - 1 element(s) with zero triangles in static mesh 'SM_FourCubes' ...

Playing as a Pawn that is a Duplicate of a Blueprint Class doesn't create an Attribute Set

UE - Gameplay - Oct 1, 2019

Creating a duplicate of a Blueprint class that has an AttributeSet seems to be interfering with the creation of the AttributeSet. ...

Hotreload on c++ native actor component class will cause BP edit malfunctioned

UE - Gameplay - Blueprint - Jan 9, 2020

[Image Removed] When the BP editor is opened, hot-reload compile will wrongly serialize a HORRELOAD_XXX object into the BP class and package which can not be found when Editor is opened again after ...

When set the current language and asset group to different languages, the asset group will not work

UE - Editor - UI Systems - Localization - Nov 22, 2020

When set the current asset group language in a particular process, the asset refers to the "source asset" and output warning log. LogPackageLocalizationCache: Warning: Skipping the cache update for ...