Unreal Engine Issues

Dithered LOD transitions sometimes briefly flicker to the next LOD before fading

When dithered LOD transitions occur, a brief flash of the next LOD level is first shown on the entire mesh after which the current LOD fades to the next (or previous) LOD. The flashing behavior only ...

Per-object shadow corrupts on Android Vulkan

Actors on an axis and in multiple cells are not culling

Actors on an axis and in multiple cells are not culling as expected. ...

HISM(Hierarchical instance static mesh) has lightmap problem after building lighting

HISM has lightmap issues after build lighting ...

Soft Raytracing Shadows are flickering

[Image Removed][Link Removed] ...

nonstandard bsp additive brushes cause breaking/artifacting on other bsp brushes when colliding

if a nonstandard additive bsp brush collides with a standard additive bsp brush, the surfaces of the bsps break and artifact, causing numerous holes in the brushes. ...

Draw Line in HUD does not respect alpha < 1.0

Draw Line in HUD does not respect alpha < 1.0, instead drawing completely opaque in all circumstances. Regression (No) issue (does) occur in 4.10.4 ...

Dropdown selection box jitters when mouse is moved over top of it on Mac

This is a regression as it does not occur in 4.14.3 at CL 3248269 Update chris.wood: I think this might be a wobble caused by floating point errors in SMenuAnchor::Tick() ...

EnhancedInput Triggers can become stuck in an triggered state after pause when using Set Mode UI Only and CommonUI

Popping Ribbon UVs

Please see the Additional Link for related UDN information. The UV popping described can be subtle, depending on settings; it's affected by spawn rate and GPU vs CPU. The popping shown in the gif t ...