I can't switch from Celsius to Fahrenheit, the switch just reverts. I do think it looks beautiful and has weather stats that I use when I bike but other apps don't always have (air quality, UV) .
It won't load places. Heck, won't even load the default city. And when I'm searching for my city it crashes to wait or force close. In case you're wondering, it's the flatpak version on Fedora Workstation.
I think we have to give credit where it's due and a lot of Linux apps (mostly the non-distro ones, so no Gnome apps etc.) Do have quite dated interfaces. I can't find a nice mail client except mailspring and bluemail, both of which then come with some features not working (depending on your distro etc.)