Unreal Engine Issues

Reflections of Masked Materials incorrect with Lumen HWRT and Max Refraction Bounces > 0

Lumen HWRT Reflections of Masked Materials are incorrect when "r.Lumen.Reflections.HardwareRayTracing.Translucent.MaxRefractionBounces" is greater than 0. The same issue occurs if the Post-Process V ...

Media Sound Wave Does Not Play after Packaging

After testing multiple different ways to get a Media Sound Wave to play in sync with the associated Media Player Asset, I feel it is very hard to get the sound to even play. Not mentioning getting i ...

Hidden Comment Bubble is Partially Covering/Blocking Top of Node

"The problem here is that the comment bubble, when hidden, is covering up the top of the node.​​" This causes the user to have to drag a connector to the very bottom of the input in order to make a ...

Moving Asset back to the location where a fixed up redirector was located can remove it from source control

Thumbnails do not update when setting Primitive Type inside Material Editor

In the Material Editor in UE4 selecting the Primitive Type under Thumbnail in the Details View does not update the preview material. There is no visible change or detail change that can be seen when ...

Multiple simultaneous keyboard event inputs not received

User Submitted Bug Some keys are not registered when pressed with combination of others. ...

Rotating Movement Component stops at pitch of exactly 90 or -90

When you set the rotation rate of a Rotating Component so that the moved actor reaches exactly 90 or -90 pitch, it stops rotating for a few seconds. ...

4.21 PIE Issues in High DPI

Using a High DPI monitor with a multiple players PIE window results in the 2nd PIE window not saving its location when moved around. Using a monitor with a smaller DPI scale the 2nd window will save ...

Graph Editor ZoomToFit fighting user

When using the middle mouse button for panning in a graph editor, the zoom/pan transition effect will not cancel before completion due to manual input, leading to UI/User competition in an undesirab ...

Warning in Net.PacketNotify Test

Warning when running the packet notify test, regarding missed acks. ...