Unreal Engine Issues

OnComponentHit Event is not triggered when hit by a spawned actor with simulate physics enabled for WheeledVehiclePawn with BoxCollison

BoxCollison's OnComponentHit event is not triggered when BoxCollison hits a spawned actor with simulate physics enabled. The event is triggered if the same actor has been placed in the level beforeh ...

Eyeball appears opaque on project launch

Math expression nodes should use CommutativeAssociativeBinaryOperator when applicable

Read-only nodes used in math expression should use CommutativeAssociativeBinaryOperator when appropriate. Even though these nodes can't be modified, there is the occasional need to copy these nodes ...

Inconsistent Behavior in Hiding Child Actors

Pressing the 'h' key only hides the root actor and none of the children, unlike the scene outliner where clicking the eye icon hides the root actor and all children. This appears to be because edac ...

Material previews in the content browser display the default material checkerboard

Occasionally material and material functions previews in the content browser are displayed with the default material checkerboard, perhaps due to shaders not being compiled. UDN users are also expe ...

Variables displaying the wrong category on the Class Default details panel.

Geometry collection components report incorrect mass for character movement components

A player cannot move heavier GC objects even if we have a valid setup due to the GC not reporting the correct mass.  ...

Crashing when toggling maps containing Color Correct Regions

When maps with Color Correct Regions are streamed into another map have their visibility toggled during runtime, it will cause a memory access violation and crash the editor. ...

Editor FPS has significant drop when moving a BSP brush in level with multiple BSPs

Editor performance plummets when moving BSP brushes in a level with several other BSP brushes present. Navmesh regeneration is the main cause as the full bounds for all BSP are used to determine whi ...

Two-sided geometry cannot be enabled for re-imported models when converting from previous versions

When converting files from previous versions of Twinmotion to Twinmotion 2025.1, re-importing any existing imported geometry will cause the geometry to be re-imported with two-sided geometry disable ...