Duplicate Priest's "Summon Dragon" skill summons itself when changing channels.

I noticed that after I used the Summon Dragon skill for the first time, that it would appear above me when I changed channels, even after it originally expired. Once the new channel has been entered and it appears, it then immediately expires, leaving the "Summon Dragon's time has run out, and will now disappear." message in the chat box. I don't know if it's just me, but it's getting a little annoying. My IGN in game is "RCricket".

 

It seems it goes away once I re-log. So it only happens after Summon Dragon is used and the bug lasts until you log off.