Select a component to see open bugs in that component:
Bugs and issues with the WebGL and 2D canvas context debugger within Firefox developer tools.
The Graphic Command line and Global Developer Toolbar.
Component for the Web Audio Editor within Firefox Developer Tools
Bugs and issues with WebGL shader editor for GLSL code within Firefox developer tools.
Bugs related to the WebIDE tool for developing and debugging apps and web sites.
File bugs here for the "What's New" DevTools panel.