Here is a log for you @Alex. I understand it is a low priority matter but maybe if you have a slow day some day. 
EDIT: The "SandboxIPCHandler stopping." is the result of me closing the app window. So it just hangs forever before that.

EDIT: The "SandboxIPCHandler stopping." is the result of me closing the app window. So it just hangs forever before that.
Like a UUID? That's weird and annoying. Definitely shouldn't be happening. Means your payees weren't syncing properly.