The Play command should have the same overall effect on the Play Queue as the Queue command does, I should still only get the songs I selected and I should be able to remove them from the Play Queue if I want. The only difference between the two should be that Play removes all the songs in my Play Queue and plays just the songs I have selected while Queue adds the songs I've selected to be played after all the other songs currently in the Play Queue.
At the moment the Play command seems to essentially corrupt the Play Queue. It'll play one song from your selection, whatever was in the Play Queue, then the rest of the songs in your selection - followed by any other songs that may have been after your selection! You also, for some reason, cant remove songs you've added via Play unless you choose to play, not Queue, some other songs then it removes all the songs you previously added via Play but still leaves all the songs you've Queued.