Unreal Engine Issues

Array inputs in Blueprint Interface results in compiler note- "No value will be returned by reference. Parameter 'NewParam'. Node:"

Array inputs in Blueprint Interface results in compiler note- "No value will be returned by reference. Parameter 'NewParam'. Node:" Bug reproduced in 4.16, 4.17, and 4.18 ...

Editor crash when adding element to Instance array of custom InstanceStaticMeshComponent

Adding an instance static mesh component to a class causes the editor to crash when an instance is added to a blueprint of the class. Regression: Yes - this behavior does not occur on 4.16.3 (CL 35 ...

Custom Depth Post Process Stencil does not work with Material Billboard on Actors

MaterialBillboardComponent does not render with CustomDepth material in PostProcessVolume as other objects do. Found in 4.16.3 CL 3561208, 4.17.2 CL 3658906, 4.18.1 CL 3454814 ...

Animation Track in Shot Does Not Animate With Evaluate Sub Sequences In Isolation Enabled

When Evaluate Sub Sequences in Isolation is enabled in a shot, other shots inside the same sequences only play the transform track and do not play their animation track Does not affect 4.18.3 Relat ...

Disabling "Apply Fogging" Doesn't Work for Translucent Material with Volumetric Fog

Translucent materials with "Apply fogging" disabled will be affected by volumetric fog.  Found in 4.19 CL# 4033788, 4.20 Preview 5 CL# 4173640, and 4.21 ...

Oculus Touch: Gamepad Special Left/Right inputs swapped

GamepadSpecialLeft and GamepadSpecialRight inputs are swapped on Touch Controllers. Inputs are working as intended on an Xbox controller. Problem may have been introduced by Oculus, I created a 4. ...

Default Values missing from Local Variables in Blueprint Actor Construction Script

Specific to the Blueprint Construction Script, Local Variables cannot have their value set in the Editor, because the "Default Value" section of the Details tab will never appear. This only affects ...

Missing materials on the rear lights of library vehicles

Reported in SF [Link Removed] The rear light material on Twinmotion library vehicles is not present on many vehicles in TM 2025.2. Confirmed affected vehicles are in the following categoriesCarsTw ...

Crash when altering the values of a custom struct element in a Tmap

If the values of the elements in a Tmap are altered for a Tmap that is using a custom struct, the editor will crash on compile. ...

Pasting nodes into level blueprint crashes editor