It seems the "queue " function isn't working correctly for albums or artiss. It will allow you to queue single tracks, but when used on albums or artists nothing happens. Android kitkat 4.4.3 spotify version 188.8.131.52
I just checked on my Nexus 7 with 4.4.3 in case it was down to the android update but queuing albums works just fine, either from the ellipsis (if you can actually hit the right few pixels) or from the long tap context menu. I don't recall being able to queue an artist though - which screen is this from?
This happened again this morning, after working last night. However the problem seems to occur when there is no signal. If i add tracks to the queue with a network connection it's fine. If there is no network connection, or a particular bad one then the tracks don't seem to be added.