Having more than one Show or Hide Toggle in Matinee Visibility Track causes a compile error in Level Blueprint

UE - Gameplay - Blueprint - Jan 5, 2015

Having a Matinee Controller in the Level Blueprint and a Visibility Track with multiple Show and Hides will cause a compile error in the Level Blueprint. ...

Navigation does not work in sub-levels

UE - AI - Jan 28, 2015

Navigation does not work in sub-levels. If the Nav Mesh Bounds Volume in a sub level is not touching a Nav Mesh Bounds Volume in the Persistent Level, it will not appear or function during Play. It ...

Entering 'Show Collision' for a project and then 'Quit' via the console command, you will receive an crash

UE - Graphics Features - May 13, 2015

Once a project is packaged, If you enter the console command 'Show Collision' and the 'Quit', the project will crash upon closing. This is only occurring in a packaged project and not happening whe ...

Incorrect Root Motion Rotation on AnimSequences created with Sequence Recorder

UE - Anim - Sequencer - Aug 11, 2016

Incorrect Root Motion Rotation on AnimSequences created with Sequence Recorder ...

Crash when editing draw size for a widget component

UE - Graphics Features - Feb 2, 2016

A crash will occur when editing the Draw Size of a Widget Blueprint in an Actor Blueprint class. Sometimes it will crash instantly after editing the Draw Size and other times it will take a couple ...

Emissive for Static Lighting discarded upon Re-opening Level or Restarting Project

UE - Graphics Features - May 24, 2016

'Emissive for Static Lighting' discarded when restarting or re-opening a project. I discovered this issue while testing [Link Removed]. This issue does not occur in the binary 4.11 release so I hav ...

A static object using 'Complex as simple' collision will not collide with a dynamic object that is simulating physics

UE - Simulation - Physics - May 20, 2015

If a static object has 'Use Complex collision as simple' set as its collision type, it'll collide with a player but will not collide with objects that are dynamically simulating physics. ...

Print String node will stop printing to the screen if PIE is exited while Gameplay Debugger is active

UE - Gameplay - Feb 15, 2017

Print String node will stop printing to the screen if PIE is exited while Gameplay Debugger is active. Restarting the editor fixes the issue. ...

Landscape renders default material if apply another material instance under ES31 preview

UE - LD & Modeling - Terrain - Landscape - Aug 27, 2019

In ES3.1 preview, Landscape will render default material if change landscape material by using material instance of landscape's material. Will render correct if using another material's instance ...

Pausing simulation in PIE does not pause looped timers on the Server when players is set to more than 1

UE - Networking - Feb 4, 2016

Pausing simulation in PIE does not pause looped timers on the Server when players is set to more than 1. The Client pauses the timer as expected. With only one player, timers are paused as expected. ...