when reopen map or look to another zone fix this, but it should not be happened

is there a chance this is a side-effect of e459c59?

edit: i vaguely recall seeing it during development, and forget what conclusion i reached (if any) as towards a cause.

no, it happens before too

This happen, when you're moving between zones.

be suspicious of notifyUpdate(), as that's triggered by many events, and little else is.

there also might be insufficient event registration by the addon or its libs to account for zone change.