A PwC partner leaked government tax plans to his colleagues to help their clients avoid the new rules.

I will resolve this market yes if in 2023 any partner who was not involved in the scandal leaves the firm, citing the scandal as the reason.

This article gives a summary of the scandal:

https://www.abc.net.au/news/2023-05-23/pwc-in-the-firing-line-as-afp-gets-involved/102376954

PwC breached the Australian government’s trust, now it is facing the consequences

A Treasury investigation into the impact of a PwC tax expert’s use of confidential information — sold to clients seeking to minimise tax — could lead to the firm being referred to the Australian Federal Police, the assistant treasurer warns.