There’s nothing conspicuous about Aug 19 being missing. It's just a rolling list of 12 months of statistics.
So why in the data from last month are the figures from July 2019 to July 2020 shown so a year on year comparison be made, yet for the following month the figures shown are from September 2019 to August 2020? August 2019 is convenient in its absence. I don’t recall us getting a daily running tally of the average 125 people who died per day in Victoria in August last year. It seems like an attempt to obfuscate the data.