Unreal Engine Issues
Unreal Engine Issues
Video material broken on Mac M3+ (sm6)
TM - Rendering - Oct 21, 2025On Mac devices, the video material in the viewport will display incorrectly, appearing stretched significantly. This only seems to affect the viewport and not rendered exports. ...
BlueprintNativeEvents with no return value (void) cannot be overridden in Blueprints.
UE - Gameplay - Blueprint - Dec 22, 2014BlueprintNativeEvents (and BlueprintImplementableEvents) are not available to be overridden in a Blueprint Graph if they do not return a value. This affects both functions present in source code, as ...
Changing Frame Buffer Pixel Format to Float RGBA makes the editor color look greyed out.
UE - Virtual Production - Rendering - Color - Jan 20, 2022Changing Frame Buffer Pixel Format to Float RGBA makes the editor color greyed out with a faded look. This is not a regression it is occurring in 4.27. ...
Adding a Structure BP parameter with a Enum BP as a member to a Niagara Module Script crashes the engine
UE - Niagara - Apr 6, 2022Adding a parameter of type structure bp which references an enum as a value to a module script crashes the engine. This issue is also occurring in 4.27. ...
Ensure thrown when applying a Linear Color User Exposed Variable in a Niagara Emitter
UE - Niagara - May 20, 2022This is a regression tested in //UE4/Release-4.27 CL18319896. Ensure thrown when applying a Linear Color User Exposed Variable in a Niagara Emitter. ...
On Instance Take Radial Damage will not receive radial damage against Foliage
UE - Gameplay - Jun 28, 2022Different results in //UE4/Release-4.27 CL#18319896 On Instance Take Radial Damage will not receive radial damage against Foliage. ...
Add World Rotation applied to a Static Mesh simulating physics behaves erratically
UE - Simulation - Physics - Jun 28, 2022This is a regression. Tested in //UE4/Release-4.27 CL18319896 Add World Rotation applied to a Static Mesh simulating physics behaves erratically. ...
Crash occurs when duplicating a State Machine in the My Blueprint panel within an Animation blueprint
UE - Anim - Runtime - Anim Blueprints - Aug 17, 2022This is not a regression. Tested in //UE4/Release-4.27 CL18319896 Crash occurs when duplicating a State Machine in the My Blueprint panel within an Animation blueprint. ...
Rotator visual helper appears in local Presentation exports
TM - Tools - Nov 6, 2025Reported in SF [Link Removed] The Rotator animator's visual helpers will be visible in locally exported Presentations when it should be hidden. This does not affect the Translator animator. ...
Font advance and fallback font metrics have issues in 4.16
UE - Editor - UI Systems - Slate - Jun 5, 2017There were some font regressions in 4.16 that we've since fixed (CL# 3456916 and CL# 3425681). These are affecting live users so we should get them into the next 4.16 build. ...