Tangram VS gnome-shell-extension-mpris-indicator-button

I had a look at Tangram (https://github.com/sonnyp/Tangram) and it ticks many of the boxes but it's inability to run as a tray app or hidden app as well as the lack of a sidebar doesn't really fit my preferred workflow.

Tangram? https://github.com/sonnyp/Tangram Desktop though, not Android.

Tangram is a new kind of browser. It is designed to organize and run your Web applications. Each tab is persistent and independent. You can set multiple tabs with different accounts for the same application.

Tangram - FOSS, but only for Linux. Also, it's a Gnome app.

It's essentially a web wrapper, but I use Tangram on my computer at home.

Tangram (GitHub): It's a GTK-based "specialized web browser" with tabs for each of your webapps. Pros: Looks native on GNOME. Cons: WebKit is incompatible with a lot of sites. Ugly app icon. No specific "focused launchers" just for specific sites (you always see all your pinned sites).

What's about https://github.com/sonnyp/Tangram ?

tangram browser You can give it a look , this is good one which recently (1 day ago) discovered Also I do not use office suit much I usually go with Google docs

Mpris Indicator Button is pretty cool too, but seems to lack a hot key to display it.

I also use the mpris indicator extension myself and that particular dev uses Fedora (or sometimes Ubuntu), and they've said in the past they can't update the extension until Gnome 43 hits, so since Fedora is still delayed to mid-November, that extension won't be officially updated just yet. But if you check their GitHub they have a "crude" master update for Gnome 43 you can use if you really want to, but just know it's not release ready yet.

Extensions: Blur my Shell, Tray icons Reloaded, Clipboard indicator, GSconnect, MPRIS Indicator Button, Night Theme Switcher, Color Picker

There are at least two extensions which do that (for Gnome 40): MPRIS Indicator Button and Media Controls.

Since Waterfox is based on Firefox and the MPRIS implementation of the latter seems optimal I suppose something is "missing"(?) in Waterfox sourcecode, I use the "MPRIS Indicator Button" GNOME shell extension and it's always worked flawlessly with Firefox but it never did with Waterfox .