I'm on Spotify version 220.127.116.117 armV7 on a Pixel 2016 running Android 8.0.0 (security patch 5 October 2017). I'm not having the issue on my Nexus 7 tablet on the same version. So it seems device specific.
Whichever way I try to share a track, when I click Share on the menu my song will stop playing, I will return to the playlist, artist page or close the app, stop playing and will be unable to share. This has been happening since 8 October (ish).
I've tried the troubleshooting steps but to no avail. It doesn't seem to matter what the track is or how I'm viewing it.
Any help as to a fix or a nod that dev knows about this and might be able to fix would be great.
Thanks for confirming things are working here now :)
That's great to hear.
As we've had no new reports in this thread since, we'll close this one up.
If the issue returns however, just give us a shout and we'll get back to you.