Landscape with increased scale value does not sculpt with low strength brushes

UE - LD & Modeling - Terrain - Landscape - Dec 18, 2014

A landscape that has been increased in scale by using the Transform values of the Detail's pane does not allow small brushes with low strength to sculpt them. ...

Refraction not working with MakeMaterialAttributes

UE - Graphics Features - Sep 14, 2015

When setting a material to Use Material Attributes and then feeding in a Refraction value with MakeMaterialAttributes, the refraction doesn't work properly Reported in 4.8, but I tested in Main as ...

Crash occurs when RayTracing.ExcludeDecals is enabled

UE - Graphics Features - Lumen - Sep 16, 2020

The cause of the crash is out-of-range access to the array. ExcludeDecals eliminates the mesh instance to which the decal material is assigned, but it seems that the MeshCommand has been registered ...

Collision jitters when going up stairs, causing erratic overlap events.

UE - Simulation - Physics - Jan 11, 2016

When overlapping with another object while moving up stairs with a character, the overlap events (OnBegin / OnEnd) that occur will be called multiple times in an alternating fashion. This will also ...

marquee selection in orthographic view selects all bsp brushes, even those not located within marquee selection.

UE - LD & Modeling - Modeling Tools - BSP - Jan 14, 2015

Marquee selection in an orthographic view selects all bsp brushes in level, even if they are not under the marquee selection. ...

Float value of AIDataProvider_QueryParams is cast faild

UE - AI - Oct 9, 2018

IntValue and BoolValue is always indefinite value in UAIDataProvider_QueryParams::BindData(). Attach the result of Watch in VS. ...

Vertex Painting - Unexpected behaviour when painting Skeletal Mesh with Low Radius Brush

Tools - Oct 21, 2019

Unexpected behaviour when painting skeletal meshes with small radius brush. This does not occur with static meshes. Confirmed in 4.25 MAIN @ CL 9730599 ...

Can't assign LightMapCoordinateIndex on Static Mesh with generated LODs

Tools - Jan 10, 2020

Once a static mesh have generated LODS, the only lightmap index value the static mesh editor's UI accepts is 0. We should be able to set the index to any value between 0 and 3 as long as there are ...

Cull Distance Volumes don't work with WP

UE - World Creation - Worldbuilding Tools - World Partition - Jul 19, 2023

drag the progress bar in level sequence would crash in debug editor

UE - Anim - Sequencer - Aug 17, 2023

it seems in FSequencerTimeSliderController::ComputeFrameTimeFromMouse the CursorPos is -nan ...