[smerriman]

Ignore my crazy bidding - this was Robot Reward, where you tend to want partner to be declarer always - but:

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After redoubling, ensuring the opponents can't play undoubled below 2N, and making a penalty double of 1♠.. both GIBs are happy to pass out 2♠ undoubled.

This isn't just an advanced robot issue. With basic robots, North doesn't bid 2♣, but if I force a 2♣ bid.. both opponents pass out 2♣ undoubled.

This is on top of the usual issues where after I make a redouble suggesting I want to penalise the opponents, partner often butts in with bids rather than checking if I want to penalise first.

[wbartley]

There probably isn't any actual logic in the bidding engine for, "opponents may not play undoubled below 2N". Rather, it must be enforced on a case by case basis by the poor soul responsible for maintaining the rat's nest of a bidding database.