Cannot Add Actor Blueprints to Object Library When Base Class is Set to Actor

Tools - Jan 25, 2016

Setting the base class dropdown of an Object Library to Actor prevents you from being able to add any actors to the library. This occurs even when the Has Blueprint Classes bool is checked. Found ...

Launching HTML5 from Project Launcher causes an error

UE - Platform - Mobile - Dec 13, 2016

Projects launched from project launcher are receiving an expression error on Google Chrome and FireFox. ...

Capsule Collision component has incorrect physics collision when rotated

UE - Simulation - Physics - Jan 5, 2017

Capsule Collision component has incorrect physics collision when rotated. This only seems to happen when the Capsule Collision is a child of another component that is simulating physics. If the pare ...

Actor leaves behind ghost collision when detached and simulating physics

UE - Simulation - Physics - Jan 18, 2017

Actor leaves behind ghost collision when detached and simulating physics. The collision doesn't show when 'Show Collision' is enabled but from the physics simulation it is clear that a collision box ...

Set Actor Enable Collision doesn't turn off collision for Child Actor Components

UE - Gameplay - Jan 30, 2017

Set Actor Enable Collision doesn't turn off collision for Child Actor Components. User expects it to do so because other nodes like Set Hidden in Game work on the entire actor and the API explains i ...

When move selected foliage to level, Foliage can not move to level.

UE - World Creation - Worldbuilding Tools - Foliage - Jul 18, 2017

With 4.15, I can move Foliage to "Sublevel B", but I can not move it with 4.16. It seems to be affected by the update in 4.16 (New: When moving a foliage asset to a new level, you will now be prompt ...

GoogleVR layout visible if stereo is off on iOS

UE - Platform - XR - Mar 7, 2018

User reported bug With iOS applications that swap from VR mode to non-stereoscopic mode, GoogleVR overlay remains on screen. This does not occur on Android devices. ...

Instanced Components variable not returning updated values in the construction script

UE - Gameplay - Blueprint - Jun 4, 2018

It is currently not possible to set variable values of an actor component, instanced in the level, by using the "details" pane. The Actor's construction script will only evaluate the variable defaul ...

"Found plugin in two locations" error when calling BuildPlugin on .uplugin named the same as one in \Engine\Plugins\...

UE - Foundation - Cpp Tools - UnrealBuildTool - Oct 2, 2018

In 4.20, calling BuildPlugin on a plugin outside the \\Engine\Plugins\... folder whose .uplugin has the same filename as a plugin inside \\Engine\Plugins\... generates the following error: ERROR: F ...

Instanced MovieSceneEventParameters does not save updated values upon level load

UE - Anim - Sequencer - Jun 24, 2019

Any instanced Actor with a public MovieSceneEventParameter struct doesn't retain any altered values on level load. Found in 4.22 CL#7053642 Reproduced in 4.21 CL#4753647 , 4.24 Main CL#7173985 ...