Motion Blur has noticeable Artifacts when rotating Camera

UE - Graphics Features - Aug 26, 2016

When rotating a camera about an actor the motion blur starts to create blocky/pixelated artifacts around the character in a halo. This can be further exaggerated by moving the actor while rotating t ...

Setting animbp reference variable in construction script creates additional animbp reference if simulating

UE - Gameplay - Blueprint - May 24, 2016

If a reference to the animBP is set in the construction script of an actor, simulating will show two separate instances of the animBP instead of one. Setting this on Event Begin Play does not produc ...

Unable to Click on Actors When in Simulate (PIE)

Tools - Sep 14, 2016

While going through [Link Removed] I found it difficult to click on the different actors in QA_Promotion during step 4. It always selected the ground or the skybox unless the camera was really clos ...

Reset to Default and Pasting can change the transform of an actor with locked movement

Tools - Jan 9, 2017

Using the Reset To Default option for any of the transform values as well as the Paste command for the Scale values on an actor can still change the values when an actor's "Lock Actor Movement" sett ...

Mouse control is not obtained when clicking on a game's title bar from another app

Tools - Jan 18, 2017

A licensee has reported that gaining focus of a UE4 game window by clicking the window's title bar results in the game only receiving keyboard input and no mouse input until you also click in the ga ...

UObjectLibary::RemoveObject removes from the wrong array

UE - Gameplay - Jan 26, 2017

The UObjectLibrary::RemoveObject function has mixed up logic inside of it that causes it to remove objects from the incorrect array. It currently removes from the Objects array if bUseWeakReferences ...

Is Fullscreen Mode Dirty always returns true for Windowed Fullscreen

Tools - Feb 27, 2017

Is FullscreenMode Dirty is meant to track if the Fullscreen mode has changed from what it is currently set to. This does not function correctly for Windowed Fullscreen and always prints true even if ...

Placing a Physics Constraint Component in an Actor Triggers a Warning During PIE When There Are No Constrained Components

UE - Simulation - Physics - May 15, 2017

A warning is appearing in the output log during PIE when an actor contains a Physics Constraint component that does not have any constrained components set. This did not occur in 4.15.2, this is a ...

Cannot add to Override Materials array of a Static Mesh Component

UE - Graphics Features - May 23, 2017

Materials cannot be added to the Override Materials array in a static mesh component because attempting to add elements to the array fails. Regression: Yes - using the plus button to add to the arr ...

CoreRedirects cannot be properly used to rename a BlueprintImplementableEvent that has a return value

UE - Gameplay - Blueprint - Dec 7, 2017

Attempting to use CoreRedirects to rename a BlueprintImplementableEvent that has a return value results in the function not being renamed in the Blueprint subclasses and its Return Value nodes causi ...