Management seem to have reported to the market once they have understood and resolved the problem to a level where they can actually quantify it. There was nevertheless any guidance that they needed to report a deviation from.
The market would have liked it less if they said "hey we've run into a problem with Aussie DCB, we are trying to resolve it". Assuming it is a one-off I think they have handled it the best they could.
My thoughts are summarised in the below link for those who are interested: