Unreal Engine Issues

Hot Reload: Component bCanEverTick is not updated after compile

Setting PrimaryComponentTick.bCanEverTick in a custom actor component's constructor does not does not stop the component from ticking after compile. ...

Translucent User Interface materials do not have a thumbnail preview

Translucent User Interface materials do not have a thumbnail preview. I do not see this issue with Translucent Surface materials. REGRESSION: No, this issue also occurs as far back as 4.17.2 ...

Using VSM and Distance Field Shadows on the same scene results in missing shadows

Nanite geometry does not cast Distance Field Shadows outside of the clipmap range for Virtual Shadow Maps. Non-Nanite geometry does cast these shadows. ...

Previous Tangent Recalc` and Size by Life misbehave at low FPS

At low FPS particle systems with "Previous Tangent Recalculation" enabled in the Ribbon Data result in messy mesh generation. Found in 4.21 CL# 4753647, 4.22 CL# 6574378, 4.23 CL# 6925347, and 4.24 ...

UV Offset Effect Material in RetainerBox Causes Visual Artifacts in Editor Preview

When a UV Offset is applied in a RetainerBox effect material, visual artifacts appear only in the editor — not at runtime — if a widget with a dotted preview outline (like CanvasPanel) is placed dir ...

Fix SourceLength to be tangent to spot light axis

Nested component subobject visualization and defaults editing is not working properly.

Currently it is only partially possible to edit nested component subobjects, but not in a way that's consistent with how top-level component subobjects are edited (both Blueprints and IWCE). This is ...

Rotated component made into root displays incorrectly in the blueprint editor

Rotated component made into root displays incorrectly in the blueprint editor. Closing and reopening the BP editor corrects the displayed root component. ...

Debug values not updated for parallel eval Animation BPs

The watched values of a level instanced ABP do not update if a.ParallelAnimEvaluation is enabled. ...

Changing a value inside a struct exposed to blueprints removes struct from blueprints and gives error upon compiling and saving blueprint

If a user creates a C++ class that contains a struct and references that struct within a blueprint, making any changes to the struct within C++ header file will prevent the user from saving the blue ...