OSX: Hang when moving addresses

Hang occurs:

Reply to a message with several people in the CC: list

Click on the “TO:” field to bring up the Address dialog

Try to drag one of the CC addressees up to the TO: field

Notice that it hangs immediately.

You must Force Quit to resolve this.

Subject: Thanks for reporting the issue! I wrote up one SPR

Thanks for reporting the issue! I wrote up one SPR - JLLU7FJ3NK.