Set Morph Target not being sent to children of Inherited Mesh

OLD - Anim - Sep 4, 2015

In previous versions of UE4, Set Morph target to call the Inherited Mesh and would result in any children of the Inherited Mesh that shared that morph target name to morph. In UE4.9 this no longer ...

Crash in Skeletal Editor due to null ActorFactory reference

OLD - Anim - Feb 1, 2017

When a material is dragged/dropped into a skeletal editor's bone hierarchy, the editor will crash due to null ActorFactory Regression: Yes - Crash does not occur in 4.13.2 binary (CL 3172292) ...

Removing components from Landscape with simplified collision results in assertion

UE - LD & Modeling - Terrain - Landscape - May 18, 2017

Performing operations on a Landscape with simplified collision can result in an assertion ...

Using blueprint debug step into BlueprintInterface function, occur crash.

UE - Gameplay - Blueprint Editor - Nov 10, 2017

If StepIn is performed on a module for which the Interface function is not defined, a crash will occur. ...

Can't delete a folder from the World Outliner

Tools - Jan 7, 2018

This issue is in the operation of World Outliner. If it attach another actor to the actor, even if you deleted folder that existed before, the folder will exist after restarting the editor. If it mo ...

When using a NavModifier with a NavBoundsVolume being in a SubLevel, unloading the level causes a crash.

UE - AI - Jul 19, 2018

When repeatedly loading and unloading sublevels with a NavBoundsVolume, it will cause a crash when using a NavModifierVolume. When the NavMesh is unloaded, it seems that the number of the DirtyLayer ...

Triggering a HotReload Compile when Start up is Manual can result in an Editor crash: Assertion failed: GIsHotReload, Trying to recreate class outside of hot reload!

UE - Foundation - Cpp Tools - Hot Reload - Jun 30, 2019

Torrigered when hotreload is performed in a case where code referencing to dll. Crash when restarting from VisualStudio. It didn’t see in 4.21. Workaround:   Delete the Intermediate folder and e ...

Long Movie Pipeline Renders cause Audio Crashes

UE - Anim - Sequencer - Jun 29, 2020

This issue can temporarily be worked around by launching the editor with the "-nosound" argument which will disable audio recording. ...

Override Parameters in the details section of the editor do not slice smoothly when dragging with mouse

UE - Niagara - Apr 6, 2022

Sliding a value within the override parameters in the details panel of the editor, the slider will get "stuck" after sliding to one value and it stops working. This occurs with any slider within the ...

Pasting an instanced subobject property into a Blueprint prevents that Blueprint from being added to level

UE - Framework - Blueprint Editor - Nov 17, 2022

Copying and pasting an array of nested instanced subobjects from a level instance into a Blueprint's defaults and adding that Blueprint to the level will prevent the actor instance from saving. ...