Exiting VR Edit mode from simulating causes viewport mismatch

UE - Editor - Workflow Systems - Mar 5, 2016

9/19 VREditor sync notes: Should grey out the editor button while you're simulating ----------------------------------------- I noticed you can fix this issue by reseting the viewport by pressing t ...

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 ...

Able to see cut off landscape in SunTemple in VR

Docs - Samples - Jan 20, 2017

When using the Oculus Rift the user can look over one of the balcony's railings and see where one of the landscapes cuts off. This occurs on the Oculus headset. UE-40907 causes the Vive to clip th ...

Adjusting Agent Radius in RecastNavMesh causes AI to not move

UE - AI - Sep 9, 2015

Adjusting the RecatNavMesh in a map can cause the AI to not move when simulating or playing in viewport. Setting it back to the default value does not fix the issue. I can only reproduce this with ...

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 ...

Breakpoint triggered in Visual Studio after running "{,,UE4Editor-Core}::PrintScriptCallstack()" command

UE - Gameplay - Blueprint - Jan 10, 2018

Running the command {,,UE4Editor-Core}::PrintScriptCallstack() in the Immediate Window in Visual Studio while debugging is paused in Visual Studio will result in a breakpoint being hit when the ...

Launching a packaged game will cause it to open on the leftmost monitor, ignoring your primary monitor

Tools - Jan 17, 2018

A licensee has reported that opening a packaged game in 4.18 and onward will cause the packaged game to appear on their left most monitor, rather than their primary monitor. This was not the case in ...