Unreal Engine Issues

Incorrect rendering result on some geometry and materials in grouped components in SKP imports

Reported in SF [Link Removed] In Twinmotion 2026.1, when importing certain SKP files with grouped components, materials may render incorrectly on some grouped components and will appear with a dark ...

Alembic import causing a crash

Importing this test asset will cause the editor to crash when using any of the Alembic Import options. I did notice that the source test asset does have 6750 frames but when going through the impo ...

Actor Scale is not included when converting from Matinee to Sequencer

Actor Scale is not included when converting from Matinee to Sequencer ...

The frame rate could be locked to around 45 occasionally on 90Hz android device.

UMG causes crash when running as a client on a dedicated server

If the settings for the multiplayer options are set as follows: Number of players : 1 Run Dedicated Server : True (Checked) Use Single Process: False (Unchecked) Editor Multiplayer Mode: Play As Cl ...

The mouse is restricted to the window bounds after Resuming from the Menu in the Blueprint_HUD level of Content Examples

After Resuming from the Menu in the Blueprint_HUD level of Content Examples, looking around with the mouse is restricted to the window bounds. Clicking inside the viewport resolves the issue. ...

Editing multiple Math Expressions will crash the editor

Editing multiple Math Expressions will crash the editor. ...

Skylight does not honor the Visibility settings when hidden

The Skylight actor cannot be disabled when using 'Hide' from the right-click context menu or using the visibility eye icon in the World Outliner. ...

Lengthy Compile Times on Blueprints Containing an Array of Self References When Multiple Instances Exist in the Level

There are lengthy compile times with a blueprint with 50+ instances in the level that contains an array of self references. On lower-end machines, the compile times are upwards of 10 seconds. Found ...

Attempting to build MinidumpDiagnostics with Visual Studio 2015 Update 2 results in failure

When attempting to build the Minidump Diagnostics project from the UE4 source, it will fail if you're using Visual Studio 2015 Update 2. Please note that this does not occur in the base VS2015 or wi ...