Since all plots had extra participant 0 then every real persons probability of winning a plot was lower than intended, meaning not 1/number of participants but 1/(1+number of participants).

Having buggy lottery award plots makes the entire thing a mockery.
Since people already took their houses (some of which they weren't supposed to win, with fair random function another participant should have gotten them) rollback is now impossible.

And reopening the plots for next round will sure feel nice for people that lost to number 0.

The only thing Square Enix can to do to fix this mess in my eyes is to delay Island Sanctuary feature until they rework it into instanced housing.