edgeRendering alpha value

Hi!

Is the alpha value of edgesColor is supposed to set alpha of the edgeRenderer effect? 'Cause if I'm not wrong, it's fade the color of the edgesColor itself, instead of the alpha: https://www.babylonjs-playground.com/index.html#K4S3GU#16 (line 62)

If this is intentional, is there a way to apply alpha on the edge effect?

Thanks

[edit] tested on Win10 > Firefox, Chrome, Edge, IE > BJS latest and stable