BP - Nativization will fail at cook time if a BP class and a User-Defined Structure reference each other.

UE - Gameplay - Blueprint - Apr 20, 2017

Note: This happens with "Exclusive" nativization mode as well. This occurs because the nativized UDS 'GetDefaultValue()' method is generated into a .h file rather than a .cpp file. This creates a c ...

[CrashReport] Ongoing CollectGarbageInternal() assertion in 4.17

Tools - Aug 22, 2017

This callstack is occurring in 4.17.0 and 4.17.1, and appears to be a continuation of [Link Removed], which was fixed in 4.16.2 with CL 3502786. I'm not re-opening [Link Removed] because there are ...

Planar Reflections do not respect SkyLight intensity

UE - Graphics Features - Nov 14, 2017

Planar Reflection actor does not reflect the intensity change of the SkyLight. In attached images, the Intensity of the SkyLight is set to 2. The darker area on the right is affected by the Plana ...

iPadPro2 Splash Screen distortion on app Launch

UE - Platform - Mobile - May 7, 2018

iPadPro2 splash screen distorted on app launch. Looks like there is a fix for this in FN branch that can be brought over. Engine/Source/Runtime/ApplicationCore/Private/IOS/IOSAppDelegate.cpp http ...

Levels Panel "Move To" function does not move level to desired location

Tools - Jun 6, 2018

Levels Panel "Move To" function will not move level to the desired location. The menu will stay open and do nothing when you try to move it.  Found in 4.18 CL# 3832480,  4.19 CL# 4033788, 4.20 Prev ...

Unlit view is affected by Exposure Compensation when enabled by post process volume

UE - Graphics Features - Jun 7, 2018

Unlit view is affected by Exposure Compensation when enabled by post process volume. This will also carry across the other debug views.  Working as expected in 4.18 CL# 3832480 Found in  4.19 CL# ...

Animations don't update on the first frame of shots

UE - Anim - Sequencer - Jul 11, 2018

Looks like this only happens for shots. I think this is because the tick prerequisites get set up on the frame of evaluation, and the skeletal mesh component doesn't get ticked until the next frame. ...

Unable to apply Materials to the chunks of a Destructible Mesh

UE - Simulation - Physics - Jul 31, 2018

When applying a second material to a Destructible Mesh it does not texture the chunks of the fractured mesh. The chunks remain the same as base color of the Destructible Mesh. This is issue was re ...

Swapping between Multiple Cloth Skeletal Meshes and Animation Classes in a Character Blueprint causes the Engine to crash

UE - Simulation - Physics - Aug 2, 2018

When changing Cloth Skeletal Meshes and Animation Blueprints on a Character it will cause the Engine to crash during PIE. This is a regression from 4.19.2 (CL-4033788) as it was working as expected ...

Finish or Custom Event Tracks in a Timeline don't execute when 'Set New Time' is being used

UE - Gameplay - Aug 8, 2018

When using Finish or Custom Event Tracks in a Timeline, they won't execute when 'Set New Time' is being used with another Timeline or Float value. This issue was reported and tested in 4.19.2 (CL ...