Saulen/Pillars bug

[gizzmo822]

Probably not the first time it is reported but there is a bug in Pillars.
When your opponent has only 2 builders to play (because there was the 2 builder event in previous round, there is way to prevent him from playing his second (and last builder).
I do not know exactly how.
But it happened to me twice and both times I was accused of cheating by my opponent.
Very frustrating and very annoying bug.
To the best of my knowledge, this statistically happens once every 80 games or so.
But I do not like to be called a cheat.