SceneCaptureComponent2D Component does not allow the use of the Hidden Actor array

Tools - Sep 12, 2017

SceneCaptureComponent2D Component does not allow the use of the Hidden Actor array and the Show only actors array does not take in elements. This issue does not occur in 4.16.3 because the feature w ...

world outliner does not hide attached actors when turning off visibility

Tools - Nov 29, 2017

When attaching actors via the world outliner, there is an issue occurring using the visibility option, actors attached via the world outliner do not follow the visibility of what they are attached t ...

Group movement distorts with scenes of different scale in actor blueprint

Tools - Dec 5, 2017

There is an issue with selecting multiple meshes that are children of different scenes when the scale is different than the default. moving the static meshes together causes them to move at differen ...

Crash Occurs When Opening a Second Sequence After Altering the First While Simulating in Editor

UE - Anim - Sequencer - Jan 30, 2018

-When opening a second sequence after altering the one prior(locking and unlocking the camera) while simulating in the editor, leads to a crash -Did not occur in 4.19 Preview 1 -As for the link to ...

Adding HISMC instances resets wind for all existing instances

UE - Graphics Features - Jul 6, 2018

When adding new HISM instances, actors using SpeedTree -> WorldPositionOffset material are reset. 4.19 Repro project provided by user. I was unable to get WPO wind working in 4.18, I did noticed th ...

Foliage: Speed tree wind is reset for every add/remove/update on instances

UE - World Creation - Worldbuilding Tools - Foliage - Jul 10, 2018

Foliage: Speed tree wind is reset for every add/remove/update on instances What is happening:When we invalidate the render state, proxy are recreated, causing the wind to be removed and add again, ...

Performance drop when spawning AI actors during runtime compared to placing them in world

UE - AI - Jan 9, 2019

There is a performance difference between spawning and placing AI into a level. This is causing issues when spawning/despawning AI actors in a large open world, where 4-5ms of frame time quickly bui ...

AJA interlaced format have a strange behavior compare to Blackmagic.

UE - Virtual Production - May 21, 2019

Reproduce and confirm what is going on with the input/output. AJA output in interlaced format, should provide 30 frames at 60fps. For each frame, 1 field should contains the odd line of the image a ...

Replay playback can become paused indefinitely after scrubbing with high time dilation

UE - Networking - Feb 19, 2020

When playing a replay with DemoPlayTImeDilation set to 5, and jumping around the timeline using GotoTimeInSeconds(), the play back can break, with game actors freezing and violently shaking. It seem ...

Lightmass ignores StaticSwitch in materialinstance

UE - Graphics Features - Aug 12, 2020

This is caused by FLightmassMaterialProxy doesn't have GetStaticParameterSet() function. (FMaterial::GetStaticParameterSet() is called.) It can be fixed by adding the following function to FLightma ...