I can’t report any bugs though Unity Help menu.
When trying to archive, I have the following message.
One question : Is Unity trying to archive on my C disk ? (I have installed the 2019.2 version on D).
Hi, this is not something to put here in Shader Graph forums. We don’t touch any of the reporting systems, you’ll have to ask somewhere else. Perhaps Unity Engine - Unity Discussions
Oops, sorry Alexandra, it’s just that I heavily posting today in Shadergraph forum 
My bad 