Landscape LocalMerge crash with PaintLayer enabled

UE - Graphics Tools - Terrain - Landscape - Aug 15, 2022

ProceduralMesh created by ImpostorBaker cannot be saved.

UE - Graphics Tools - Modeling Tools - Mesh Editing - Jan 12, 2023

Clearing the DynamicMaterial reference will save it, but several licensees have inquired about it, so it would be kind if it were corrected. ...

Combo triggers do not fire the "Completed" event

UE - Gameplay - Input - May 25, 2023

Improper Initialization of trigger values when added at runtime with the key pressed already

UE - Gameplay - Input - Nov 11, 2022

See the comment on UInputTrigger::LastValue around issues being a bool type on first tick ...

Mesh deformed by Cable Component does not output velocity

UE - Simulation - Core - Aug 7, 2023

The velocity when moving the root is output, but it seems that the velocity for each deformation is not output. Since motion blur and TSR use velocity, problems such as ghosting may occur. ...

InvariantLeft and InvariantRight justification mispositions wrapped multi-line text

UE - Editor - UI Systems - Feb 26, 2026

When a UMG Text widget is set to Auto Wrap and uses InvariantLeft or InvariantRight, the wrapped visual lines are positioned differently than expected compared to Left/Right. In the current engine ...

Material expression "FloatToUInt" can trigger a check() when input is invalid

UE - Rendering - Architecture - Materials - Mar 11, 2026

When a "Float to UInt" Expression is used in a Material Graph with a valid direct input connection that fails to evaluate, function UMaterialExpressionFloatToUInt::Compile() does not catch the input ...

Camera actor preview window does not display properly in orthographic view

Tools - Apr 13, 2015

Adding a camera to the scene and setting the projection mode to orthographic doesn't display properly in the preview window. ...