Unreal Engine Issues

Crash when using Mesh Reduction on ScotsPine_01 for LOD3

A crash occurs when trying to use the Mesh Reduction tool for the ScotsPine_01 static mesh from the Open World Demo collection. The assets from this project are usually very processor heavy due to ...

World Delta seconds appears to Cause a miss calculation (regression 4.12.3 -> 4.12.4)

If the user uses world delta seconds in a calculation there appears to be some incorrect values. Note there is also a users project attached if you would like to look at that example. ...

Color changing through material parameter collection in a emissive material will not affect lightmap baking, unless recompile the material.

Inaccurate updates to root widget visibility binding

Inaccurate updates to root widget visibility binding, so far in my testing, this does not affect the functionality of the binding. Regression: affects 4.13.2, 4.14.3, 4.15.1 binary versions ...

Cannot "hit" character in PhysicalAnimation Content Example 1.2

Cannot "hit" character in example 1.2 of the PhysicalAnimation map in Content Examples Does not occur in 4.8.3 ...

VectorNoise Material Expression Position's tooltip says it accepts 2 or 3 dimensional vectors, but the node raises an error if a Float2 is input

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Crash when a StateTree-related Parameter is of a type that includes two nested arrays with the same name (due to FPropertyChangedEvent::ArrayIndicesPerObject using array names to map to their changed indices)

This issue was reported in the context of adding and setting parameters on StateTrees, Tasks and related assets, but its root cause lies in the structure FPropertyChangedEvent and can possibly affec ...

Changing the “show mouse cursor” variable of PlayerController with a mouse button input does not work the same as with a keyboard input

Using the mouse input to show the mouse cursor acts like an Alt+Tab. When clicking the mouse input again to no longer show the cursor, the camera controls stop at the edge of the screen. Reported i ...

Engine crashes while attempting to resimulate procedural foliage volume with target layer set on landscape proxies

If a procedural foliage volume attempts to use the "target layer" feature and resimulate while encompassing a landscape proxy, the editor will crash. Frequency: 3/3 Crash Report: [Link Removed] ...

Material With Hair Shading Model Draws On Top Of SSAO

The Hair shader no longer allows ScreenSpace AO on areas of the screen it occupies. While in the Ambient Occlusion Visualizer it appears that the material draws on top of the SSAO. REGRESSION? Yes ...