Ann: MOZ - FY20 Results Release, page-18

I have a feeling the sell off was linked to people consuming the audit report which under the heading "material uncertainty regarding going concern"

Don't think people go that far..

After all, that is a standard recommended format out of auditor's guidelines relating to Covid effect..

Better check the director's report on page 5:

"Although traffic and sales are expected to remained below prior year levels the actions taken in the second half of FY20 allows the Group to
continue its focus on comparable store margin growth. Managements also expect to further realise cost efficiencies in the 2021 financial year.
The recent closures across Victoria and New Zealand and the subsequent subdued sentiment across other states in August has been challenging
however the Group expects this to improve post September as restrictions are forecasted to ease and we remain confident in a return to
sustainable profitability for the 2021 financial year, subject to no further material disruptions to operations due to COVID-19."