Two more potentially up for the chop:
Malcolm Roberts (ON) was probably a British citizen when he was elected. He had supposedly applied to have his citizenship revoked, but his request wasn't processed until five months after he was elected (ergo actually a citizen). He's said today that he never saw himself as British therefore he was never a citizen even if the British government thinks he was.
There's some concern brewing that Julia Banks (Lib, Chisholm [North East of Melbourne]) may have Greek citizenship and might be ineligible. She has denied having citizenship, but there is discussion about whether she might have been granted Greek citizenship automatically because her father was born there, despite she herself having been born in Australia.
Thus far, the loss of anyone caught up in this debacle has really provoked a change in the complexion of the parliament; however, the loss of Julia Banks would not force a recount of the election, but rather a byelection. This is potentially a problem for the government, as they only have a one seat majority and, unlike the others caught up thus far, Julia Banks sits in the lower house. Chisholm is a marginal seat that was held by Labor for nearly 20 years prior to the 2016 election, when Julia was elected.
Victoria is the safest Labor state and obviously home to Bill Shorten himself. Chisholm is one of the few seats in Victoria that Labor could potentially win in an election, so any byelection here would be extremely dangerous for the government.