You are looking for scrcpy: https://github.com/Genymobile/scrcpy

It says audio works, but I never used that feature.

This happens to me with the native Arch build as well. File -> Syncronize reloads the view and everything behaves normally after that.

I use ibus-uniemoji, and I settled with this years ago after trying to find a similar replacement coming from Windows as you.

• https://aur.archlinux.org/packages/ibus-uniemoji
• https://github.com/salty-horse/ibus-uniemoji

After install just set up a keyboard shortcut to quickly change between input languages, and you can just type your emojis effortlessly. As it’s an input method it doesn’t matter what DE you use. Demo gif from Github:

I tried that recently. I didn’t like that it doesn’t have a widget, and the downloads and current playlist are completely separate. Also there was no option to automatically continue when connecting to a headset (this was working in Ultrasonic 4.8, but not in 4.7.1 I hope they fix that bug sometime…) So after some weeks use I switched back to Ultrasonic.

My offline android music workflow:

• Server: Navidrome but any music server supporting Subsonic API would work here. Navidrome has a nice UI, and reads MusicBrainz IDs, and can scrobble to ListenBrainz, that’s why I settled with this.
• Mobile app: Ultrasonic, on Fdroid. There are a lot of ways you can set up caching. I set up that it should automatically download everything from my “Now playing” playlist, at home on wifi I just add a bunch of albums and playlists to the “Now playing” list, it takes a while but it transcodes and downloads everything in a couple of minutes. It has very good Android Auto support, and a widget. Due to an annoying bug I had to downgrade to version 4.7.1, but otherwise I love it.

Originally it was a pejorative term for Japanese and East-Asian car modders: https://en.wikipedia.org/wiki/Rice_burner Than the term moved from car modding subculture to computer UI modding subculture.