Niagara Ribbons using Two Sided materials are incorrectly lit

UE - Niagara - Apr 15, 2019

Two Sided materials are lit incorrectly on Niagara ribbons. The sides will be flipped of how they should be. ...

UDistributionFloat member resets to null upon Blueprint Compile

UE - Gameplay - May 14, 2019

A UDistributionFloat property is reset to NULL when compiling a Blueprint sub-class of a C++ class that has a UDistributionFloat property. ...

Skeletal Meshes have physics collisions lag

UE - Simulation - Physics - Oct 2, 2019

Skeletal mesh's physics collision lag behind the actual mesh. It didn't matter if there was just a root bone or multiple bones/constraints. This doesn't happen when using static meshes. The effect ...

"Set Animation Mode" creates multiple instances of the AnimBP

UE - Gameplay - Blueprint Editor - May 12, 2015

Changing the Animation Mode repeatedly creates a new instance of the AnimBP being used every time you switch back to the Animation Blueprint mode. Example Project: [Link Removed] ...

Unable to Exit the 'Device Profiles' Console Variables Dialog Menu Easily

Tools - Jun 1, 2015

When adding a new variable to a new or existing 'Device Profile' it becomes difficult to close the dialog window. You are unable to click out or press the escape button once in order to close the di ...

Inputs on Find Item Node Can be Connected to Executions

UE - Gameplay - Blueprint - Jun 27, 2016

When using a Find Item node to search for something in an array, you are able to connect execution pins to the node, which then changes it to require an array of execs as an input. ...

Using r.RenderTargetPool.Events in debug configurations causes breakpoint in VS

UE - Graphics Features - Mar 3, 2016

Building a project in a debug configuration and then running through VS debugger will trigger a breakpoint if the console command 'r.RenderTargetPool.Events' is used. ...

Performance Drop Occurring During PIE When Blueprint is Open

UE - Gameplay - Blueprint - May 20, 2016

Having a blueprint open during PIE causes a significant drop in performance. Having multiple blueprints open can almost render more complicated projects unplayable. The user has reported 120 fps wi ...

Audio cue that is playing is restarted when a branch parameter is changed

UE - Audio - Oct 6, 2015

When using a branch node inside of a Sound Cue, if that branch's bool parameter is changed while the cue is playing, the cue will be restarted from the beginning. Link to project: [Link Removed] ...

Undocked Windows with a hidden tab cannot be unhidden, moved, or docked any longer.

Tools - Dec 16, 2016

Any undocked windows that have their tab hidden cannot be unhidden and the window cannot be moved. This is problematic because one this is done even if you close the window and reopen it via the Win ...