Slider component does not accurately update value if thumb image is large

UE - Editor - UI Systems - May 26, 2017

Slider component does not accurately update the value if thumb image is large in size. The issue is that when a value range on the slider is clicked the thumb should match the associated value; howe ...

World Origin Rebasing Causing Camera to be Offset From Location When Exiting PIE on a Large Map

UE - LD & Modeling - Terrain - Landscape - Jul 6, 2017

When using World Origin Rebasing, it is possible for the camera to offset itself from your starting location when exiting PIE. This will cause the next PIE session that starts at Current Camera Loca ...

Random Deviation of 0 causes service node instantiation fail

UE - AI - Apr 17, 2018

Licensee has 4 Services that aren't being initialized with their respective Tasks when they Plays in Editor. If the Behavior Tree is opened first, the warnings do not appear. All 4 of the Services h ...

Placing a rect light in between two static meshes causes the surface to be extremely bright

UE - Graphics Features - Jun 7, 2018

Placing a rect light in between two static meshes causes the surface to be extremely bright. This will happen even though the lights settings are default. It will not happen if it is lighting just a ...

Metal SM5 shader code cannot be viewed in the Editor on Mac

UE - Platform - Mobile - Aug 24, 2018

The Metal SM5 shader code cannot be viewed in the Editor for a Material. Prior to 4.20, only HLSL Code could be viewed. In 4.20, a number of additional shader options were added, and they all work w ...

Cinematic DOF Does Not Work With TemporalAA Upsampling Enabled

UE - Graphics Features - Oct 9, 2018

Cinematic DOF does not work correctly if TemporalAA Upsampling is enabled. Standard Circle DOF works as expected with Upsampling. However, enabling the New DOF Algorithm produces almost no blur when ...

Building UE4 solution fails in Test configuration

UE - Foundation - Core - Nov 15, 2018

Attempting to build the full UE4 solution for the Test configuration fails in 4.21. Most projects will build successfully, but a few will fail with various errors. Most of the errors appear to be re ...

Crash When Material is Set to Deferred Decal with Emissive Decal Blend Mode and Forward Shading Enabled

UE - Graphics Features - Jan 25, 2019

When Forward Shading is enabled, if you create a material with their properties setup with the following:   Material Domain: Deferred Decal - Blend Mode: Translucent - Decal Blend Mode: Emissive T ...

Moving actor to another level breaks soft object reference

UE - Gameplay - Jun 9, 2020

REGRESSION: In 4.24, there was a fixup process that would allow the soft reference to remain valid. This seems to be missing in 4.25 Moving an actor to another sublevel immediately breaks soft ref ...

Preview Scene - Lighting angle changes between Profiles

UE - Graphics Features - Aug 25, 2020

When previewing an object, the lighting angles change between profiles; the lighting position at '0' will also change when the Lighting Rig Rotation is set to another value, then back to 0 again.  ...