Unreal Engine Issues

Xcode 26/16.4 Metal Toolchain generates metallib's that are not compatible with iOS 16

Below is the error output from FirstPerson template as a C++ project: {+}../../../FirstPerson58CPP/Content/firstperson58cpp_sf_metal_es3_1_ios-metal_es3_1_ios.0.metallib, 5881486 bytes!2025-09-23 1 ...

Sk mesh editor "Bone to Remove" is not update when removing bone in the SK skeleton editor

GetMouseX returns stuttering value if ShowMouseCursor is enabled

Showing the mouse cursor and holding down the left mouse button while dragging will cause the MouseX event to broadcast incorrect axis values.  ...

Some parameters tooltip descriptions are missing

The user is shown an "default" tool tip message when hovering the mouse over material parameters. ...

Translucent mesh dissapears when using masked shadows

This bug appears to be related to pass filtering. To observe correct behavior. In Project Settings->Rendering->Optimizations, set “Early Z-pass” to “Decide Automatically”, and disable “Mask materia ...

OnObjectPropertyChanged Firing Excessively when FText is Bulk Edited

If multiple game objects are selected at once and their text field is edited, instead of getting N events, it produces N-squared events. It looks like FPropertyHandleBase::SetPerObjectValue is call ...

Crash when createing a Landscape and the DisasterRecoveryClient plugin is enabled. In the editor appears as Recovery Hub.

When DistasterRecoveryClient (in editor called RecoveryHub) plugin is added to the project and the user creates a Landscape, a crash occurs. ...

Static Meshes that are reimported with less materials can lead to map check errors on instances that had overriden materials that require manual cleanup

StaticMeshActors placed in the world can override the default materials of a static mesh. If the static mesh is then reimported with less materials, the actors maintain references to unused material ...

SpeedTree velocities broken

Moving a function to the parent class does not update the FunctionReference on calling nodes

When SMyBlueprint::OnMoveToParent() gets called the callsites of the function are never updated in dependent blueprints. This results in any UK2Node_CallFunction's not having their `FunctionReferen ...