I noticed that the "Swipe to add a song to queue" does not work when operating in offline mode.
As soon as I go online again, swinping right does add songs to the queue again.
We haven't heard from you in a while, so we're closing this thread.
If you're still having trouble, don't hesitate to let us know!
It's odd that this happens. Let us know what operating system and Spotify version you have. Maybe a clean reinstall with these steps can help you out.
Keep us posted.
I'm using an iPhone SE with iOS 11.1.1, running Spotify's version 188.8.131.523
Thanks for the info @maurice_ichi.
Did following the steps for a reinstall help? If you haven't tried yet, try restarting your device first to see if it makes a difference.
Be sure to let us know how it goes.
Same problem here