Unreal Engine Issues

EarlyZPassOnlyMateriaMasking Makes Masked Materials on Particles Flicker When Close to the Camera

When "r.EarlyZPassOnlyMaskedMaterials" is enabled, masked materials used with particles will flicker when close to the camera. Found in 4.17 CL# 3658906, 4.18 CL# 3832480, 4.19 CL 4033788, 4.20 CL# ...

Material Editor Assertion Crash When Collapsing Material Attributes

Collapsed material attribute nodes cause an editor assertion crash in the material editor when viewed or opened. Assertion failed: (Index >= 0) & (Index < ArrayNum): Array index out of bounds: 0 fr ...

Material Editor Crash occurs on mathematical operation node receiving invalid input from a Texture Object

Tile Grid persistently visible with Tile Map when viewed through Orthographic Camera

The Tile Map grid is consistently visible when playing and viewed through Orthographic camera. The user reporting the issue noted some observations which I can also confirm are occurring in both en ...

Widget Components Add Thin Black Outlines to Images

When a slate element that uses a png with a transparency the edges have a black outline. When the Widget3DPassThrough material is applied to the widget the effect is lessened, but is the outline sti ...

Renaming a component in a parent blueprint can lead to data loss in its unloaded child blueprint.

A child blueprint won't be marked dirty if it hasn't been loaded and you rename a component on its parent blueprint. This can lead to a situation where the editor can be closed without prompting the ...

World Aligned Blend Ignores Mesh Scale

When scaling the mesh the world aligned alpha projected onto the mesh doesn't adjust or change according to the surface of the mesh. It appears that scale is locked in object space so an object with ...

Default name 'None' for TextureSampleParameter2D blocks overriding in the material instance.

Named 'None' in the material editor, TextureSampleParameter2d is not overridden in the material instance. ...

Global illumination Postprocess settings doesn't affect Reflection on Mobile

Postprocess GI related settings look like working in 4.22 on Mobile now, but seems buggy, Not sure if it has supposed to be supported on Mobile since it has no any info in Doc or 4.22's release note ...

Mesh Renders in Main Pass if Both "Render CustomDepth Pass" & "Render in Depth Pass" Are Enabled, While "Render In Main Pass" is Disabled

Meshes set to not render in the Main Pass still does if both "Render CustomDepth Pass" & "Render in Depth Pass" are enabled, while "Render in Main Pass" is disabled. Attached is an example project. ...