I believe this may be due to the album icon size. You can see a different in the bubble size between the two attached examples (toobig1.png and toobig2.png). It appears to be album icon related. I played an album with no custom album cover icon and the information bubble appeared at the expected size (with the default album icon present).
** Attachment added: "toobig2.png" https://bugs.launchpad.net/ubuntu/+source/rhythmbox/+bug/714922/+attachment/1845601/+files/toobig2.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/714922 Title: Next song info takes up entire screen -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs