PIE captures mouse when "Game Gets Mouse Control" is disabled

Tools - Oct 31, 2017

When entering PIE, the mouse is captured by the viewport regardless of the "Game Gets Mouse Control" setting. Regression: No - Same behavior occurs in 4.17.2 ...

Network profiler crash

UE - Networking - Aug 6, 2020

Running with the -networkprofiler command line argument can crash the server on the first engine tick in FNetworkProfiler::TrackFrameBegin because the file writer archive hasn't been created yet. ...

Font advance and fallback font metrics have issues in 4.16

UE - Editor - UI Systems - Slate - Jun 5, 2017

There 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. ...

"Cull Backface" in Cloth Paint is not effective if the back faces are close to the front faces

UE - Simulation - Physics - Character - Jul 6, 2017

When Cloth Painting, "Cull Backfaces" is ineffective when the backface is very close to the face that you are painting on Occurs on? 4.16 - 3466753 - YES 4.17 - 3523593 - YES ...

Lighting Channels Do Not Function with 78+ Lights on Actor

UE - Graphics Features - Oct 20, 2017

Lighting channels do not function when the number of lights affecting actors is 79 or higher. Any number of lights that is 78 or fewer will honor lighting channel assignments. ...

Transform key don't visible when Import From Animation Root

UE - Anim - Sequencer - Mar 7, 2018

Transform key don't visible when Import From Animation Root. This problem happen from 4.17. 4.16 is visible. Case:4.16[Link Removed] ...

NPC - Texture Sample DI does not work on Niagara Parameter Collections

UE - Niagara - Nov 8, 2023

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.  ...

NavMesh does not build correctly to SkeletalMesh collision

UE - AI - Mar 16, 2015

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

UE - Graphics Features - Jan 11, 2016

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

UE - Gameplay - Blueprint - Sep 14, 2016

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. ...