There are several issues with the Spotify support in release 1.1.1, so I've been working on fixing those.
The blocking of the GUI when switching songs is fixed.
Streaming being limited to 128kbps is fixed.
The favorites and search results returning too many artists and albums is fixed.
However, today I notice that Spotify's authentication for the actual streaming is no longer working, there is some discussion here:
https://github.com/librespot-org/librespot/issues/1308
https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/issues/203
Hopefully it will be resolved, and then possible to provide a access token to gstreamer so we do not have to provide additional login for the actual streaming too.