The two past elections that we looked at did not show any problems like that. Maybe former elections would. The system we propose does not produce overhang seats, but if a party is overly successful with constituency seats, then the seats will be transferred from the competing parties to the party with the excessive success in constituency seats. By the way, this is the same provision that is used in Scotland. It is defined with different wording in the law, but with this provision you do not have overhang seats. When you do not have overhang seats, you are in a position to honour the constitutionally mandated number of seats per province and territory.
Whether there are problems.... One should probably look at older elections, too, but we had only a limited amount of time, so we restricted our evaluation to the last two general elections.