WebExtension: Provide option to hide the default horizontal tab browser (opt-out)

[asampal]

With the current FF Nightly, I'm getting tabs across the top and in the sidebar. Known issue?

Add-on version: 0.8.5a2
Firefox version: 58.0a1 (2017-09-30) (64-bit)
OS + OS-Version: Windows 10 64 bit CU
Other tab + user interface related add-ons:

[Croydon]

This is a limitation in the Firefox WebExtensions APIs I can't work around.
https://bugzilla.mozilla.org/show_bug.cgi?id=1332447

I doesn't seem like the API gets support for hiding the default tab browser with Firefox 57, so the horizontal tab browser will be at least for one release round visible.

Actually, it is good having an extra issue for that, since I can't fix it with #13 for the named reasons. Thanks for opening.

[codecat]

Following this issue closely since today's release of 57. This is frustrating me already :(

[Prototyped]

Can be worked around via users' own userChrome.css, even if it can't be done via the WebExtensions API:

piroor/treestyletab#1224 (comment)

And the ugly, tall sidebar switcher can also be made to auto-hide in this manner:

https://www.reddit.com/r/firefox/comments/721ieq/ff57_removehide_tab_bar/dptjujv/

[jonasflint]

I don't see much of a point on having the extension if there are going to be two tab sets...

[Croydon]

I don't see much of a point on having the extension if there are going to be two tab sets...

I can only repeat: There is nothing I can do about this at this point. You could upvote the bug in Bugzilla to help Mozilla get an overview what APIs are the most wanted ones :)