Complex Collision as Simple causes odd Overlap behavior

UE - Simulation - Physics - Jan 25, 2016

When triggering overlap events with a Static Mesh using Complex Collision as Simple, the overlap Begin and End events will be triggered rapidly in sequence. Changing to Default collision will fix t ...

Delta applied twice when moving parent and grouped child actors

UE - Gameplay - Apr 8, 2016

When some grouped actors are childed to another actor, and both the group and the parent are selected in the world outliner, movement delta is applied twice to the grouped children. Code for a poten ...

Collision Meshes Are Ignored Until FBX Is Reimported

Tools - Feb 20, 2017

When importing a mesh with it's collision geometry and its LOD meshes all contained within the same group it won't import the collision geometry correctly. This can be fixed by simply right clicking ...

Material Slot Names Get Replaced With "None" After Merge Actors Operation

Tools - Mar 23, 2017

After merging two actors the resulting merged actor's slot names will be replaced with "none". Fixing this is a very tedious process for our licensee since there usually is a large amount of slot ...

KiteDemo: Bookmark spawn function broken if in Run mode

Docs - Samples - May 4, 2017

While testing in KiteDemo - //UE4/Release-4.16 CL 3420042 in Binary – I found that pressing the bookmark attraction Scene keys (1 - 0) does not work as intended if user is in Run mode. ...

Datasmith imports glossiness Texture as a Normal Texture

UE - Editor - Content Pipeline - Datasmith - Exporters - Sep 6, 2018

The Datasmith Importer for 4.20 (4.20E2) imports Glossiness Textures as Normal Maps. This is a regression from 4.19.2 (0.182) as Glossiness Textures were imported as World Textures ...

Preview Mode Button Does Not Have an Icon When Small Toolbar Icons is Enabled

UE - Platform - Mobile - Feb 25, 2019

Preview mode button is missing an icon with "Use Small Tool Bar Icons" enabled. Found in 4.22 Preview 2 CL# 5035897 and 4.23 CL# 5172174  ...

ARKit - ARKitCameraMaterial crash

UE - Platform - XR - Apr 12, 2019

Spawning an object with ARKitCameraMaterial will now crash the app. Tested with 2nd Gen iPad Pro (A1701) Verified in 4.23 MAIN @ CL 5806859 (Needed to install from IPA) ...

Private lobbies cannot be invited to on Steam

UE - Online - May 13, 2019

The old method doesn't work with private match invites as it doesn't have the right security permissions. It's still valid for dedicated servers. It also doesn't work properly with lobbies on VR eit ...

Disabling 'Maintain Horizontal Ground Velocity' -> incorrect velocity reported when colliding in negative directions

UE - Gameplay - Player Movement - Jun 6, 2019

With  'Maintain Horizontal Ground Velocity' disabled in the first person character - velocity is not set to zero when stopped by collision while moving in a negative direction. Confirmed in 4.23 ...