BlueprintNativeEvents with no return value (void) cannot be overridden in Blueprints.

UE - Gameplay - Blueprint - Dec 22, 2014

BlueprintNativeEvents (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 ...

Pose assets do not snap to the pose when Additive is disabled

OLD - Anim - Oct 24, 2016

This is a regression from 4.13.1 as it was snapping to the pose then. If this was an intentional change please let us know and we can update the test case to reflect this. ...

AvfMedia: Many file types supported on macOS and iOS are reported as not supported in UE4

Media Framework - Sep 6, 2016

See also https://forums.unrealengine.com/showthread.php?64082-Media-Framework-Roadmap&p=590662&viewfull=1#post590662 ...

Cannot delete Notifies from Anim Notify Manager

OLD - Anim - Jan 4, 2017

Cannot delete Notifies from Anim Notify Manager. Regression: YES Broken: 3224400 (4.14.1) Worked: 3172292 (4.13.2) ...

memory leak from incorrect PhysX shape ref counting

UE - Simulation - Physics - Mar 9, 2017

PxShapes are created with a ref count of 1, and it is up to the caller to decrement this once the shape has been attached to an actor. There are a handful of places in the code in which this doesn' ...

Importing fbx with armature resulting in crash

UE - Editor - Content Pipeline - Import and Export - Jan 20, 2020

Importing an fbx file with armature on MAC results in crash Tested: 4.23.1 CL#9631420, 4.25 CL#10889200 ...

Media Textures assigned at run time are not being applied to the assigned mesh

Media Framework - Feb 21, 2020

Dynamically created media texture is not applied to assigned meshes.  Tested in:  4.23.1 CL#9631420, 4.25 CL#11574810 ...

TSR ghosting when see through translucent wall

UE - Graphics Features - Feb 7, 2023

see through a translucent material will cause ghosting  This issue did not occur in 5.0, it occurs when using TSR on UE 5.1 or later. ...

Interchange: Forcing "Bind Pose Time Zero" to true doesn't always give good result

UE - Editor - Content Pipeline - Import and Export - Nov 6, 2024

When using the legacy fbx importer with time zero option to true the skinning is good. So its a regression. Would be awesome if it can be fix in 5.5.1 ...

Streaming Bounds Advanced Show Flag is not working as expected

UE - Graphics Features - Jan 11, 2017

The stairs should have radius around each stair (StreamingBoundsExpected attachment). Instead there are no visible changes when the flag is checked (StreamingBoundsResults) This is Not a regression ...