can I ask what you mean there?
1.) Monsterform? Wazat? I though there were only Slime, Beast, and Dragon? Is it new or secret?
2. What's not intended to revert your form and leave you in a locked state? The teleportation? It does say, in the recent bug fixes, that you worked on that in the last two?
3.) (last one, I promise), are you saying that it should fix itself if you get inside the dragon fortress and surrender rather than doing it elsewhere on the Island?