> ... one of the most requested features has been the ability to hide tabs with the WebExtensions API. It was a key element of some very popular legacy add-ons ... It's weird that they are not mentioning Tree Style Tabs by name. But, at least they're listening the the user requests. I don't use the plugin myself, but I heard that one of the gripes of the new WebExtensions version is that it still shows the normal hor…
I imagine it's the same tone they use for discussion of adblocker related features, "we need this for content blocking addons" rather than "we need this to support uBlock Origin."
Hiding the top tabs can be done in current versions but you have to go digging through settings folders and set up a css file with some rules. There's also a built-in header on the sidebar than can be hidden by similar means. Hopefully they'll also let us hide that header (it lets you switch to other sidebar views like Bookmarks and History that I don't want to use in the sidebar) so I can avoid the css setup in the future.