I doubt this is going to show correctly here, but I'm going to try.
In the channel, I type //topic $chan 4♬♪‿♭♫⁀♬‿♭♫⁀♬♪‿♩♫ (it's a bunch of music notes, colored red) and I see myself changing the topic to what it should be. However, the titlebar of the channel just shows a bunch of boxes.
/list #channelname returns the proper topic in the list window, as does /topic #channelname (in the channel window itself.)
I believe I had a similar problem at times with 7.x betas, and IIRC changing fonts seemed to correct the problem, but that doesn't seem to be the case this time.
