Unreal Engine Issues

Shader compilation errors when packaging for iOS after disabling force full precision

User report: I want to run iOS shaders with half precision floats as I do on Android. If I disable Force 32 bits Floating Point Precision, there are unfortunately a bunch of shader compilation error ...

Option "Update Animation in Editor" is reset for child skeletal meshes

When the boolean is set on a child skeletal mesh, looks like it gets reset   Specifically , at UActorComponent::ConsolidatedPostEditChange forces a reconstruction of the Blueprint, making the trans ...

LocalHeightFog placed in 5.3 projects are invalid and not appearing when the project is updated to 5.4

LocalHeightFog actors placed in levels for 5.3 projects are invalid and not appearing in levels after the project is upgraded to 5.4. This is likely due to LocalHeightFog being renamed to LocalFogVo ...

Ensure when changing the separate translucency buffer resolution and open the map in which PostProcessVolume is placed

Static lighting crash on 5.4 when using landscape with WPO

When static lighting is built for a landscape with "Use Material Position Offset in Static Lighting" enabled it causes an editor crash. Licensee mentioned it was likely caused by a commit for 5.4, C ...

Nanite Landscape in World Partition level has inconsistent Painted Layers

It appears that painted Weightmaps have inconsistent mappings between Nanite and regular landscape, BUT only if those landscapes are created in a World Partition level, landscape in regular levels d ...

Slate Post Buffer does not work correctly when changing Default Back Buffer Pixel Format

Local fog volume rotation causes offset issues at high world position values

Local fog volumes have a substantial offset when placed at a far distance from world origin and is then rotated. This was not the case in 5.3 when tested under the same conditions, so this is likely ...

In BP/Python Editor Utilities, function SetEditorProperty() unexpectedly fails for Actor Reference Properties on External Actors.

As part of the Python and Editor Scripting Tools, it is possible to programmatically set variables in actor instances of the current level just like when using the Details Panel in the Level Editor. ...

Lumen screen traces from hair cast noising moving shadows on faces

There is moving blotchy noise on the head and face from hair when Lumen HZB tracing hits hair.  CL 33258050 fixes the noise in the hair, but tracing still hits hair when it starts from surfaces like ...