Unreal Engine Issues

Crash when changing details of an animation in an Animation Composite

This is a regression tested in //UE4/Release-4.27 CL#18319896 Fatal error is thrown and the Editor crashes when changing details of an animation in an Animation Composite. ...

Movie Render Queue Deferred Lighting(Detail Lighting) only outputs Lighting Only

This is not a regression. Tested in //UE4/Release-4.27 CL#18319896 Movie Render Queue Deferred Lighting(Detail Lighting) appears to only output Lighting Only.  ...

Returning the value of a Transform as a String has a missing colon after Scale

This is NOT a regression. Tested In //UE4/Release-4.27 at CL18319896 Printing an actor's transform as a string returns transform and rotation with a colon, but returns scale without. ...

Texture Sample DI does not work on Niagara Parameter Collections

Texture sample DIs no longer work when used with Niagara Parameter Collections. This seems to affect Volume Texture DIs based on customer reports, but I have not confirmed this.  ...

Crash when importing Alembic data with a large number of vertices if Merge Meshes is enabled.

NavMesh does not build correctly to SkeletalMesh collision

NevMesh cuts out holes for collision incorrectly with Skeletal Meshes. Skeletal Meshes with "Can Ever Affect Navigation" set to true and that have a Physics Asset are capable of causing this. ...

Reduced Tessellation at edge when using world displacement

Adding a material to a mesh that is affected by world position offset has reduced tessellation around the meshes edges. This is seen when viewed in wireframe and is influenced based off of the angle ...

meta specifier ArrayClamp does not work with array in struct

Giving an int32 variable the specific ArrayClamp has no affect when the specified array is defined inside a USTRUCT(). Variable is able to be set to a value outside of specified struct's range. ...

Can't undo blueprint/material movement done by arrow keys

When moving nodes in materials and blueprints using the undo option doesn't undo the movements made by the arrow keys. This issue affects anything that uses nodes on an event graph. ...

OnUrlChanged does not fire on mobile

When using On Url Changed event on mobile devices, the event does not appear to fire as expected. Tested on iphone 5 As a note: The function GetUrl appears to be similarly affected. ...