Your partner (East) leads ♥6 (4th highest), dummy plays ♥7 and you use the ♥T that holds.
You continue with ♥K, that holds. What now?
Playing with a human partner you would know partner has only 4♥s, but playing with a bot you can't be sure.
But North has shown a balanced hand, so you can "see" he has 5 ♠-tricks.
You are sure, that partner holds ♥AJ (North would never duck ♥K in this situation.
So counting HCP, Dummy has 16, partner seems to have 5, and you have 7, leaving North with ♦A and ♣AK.
So a shift to ♣Q as the bot did, can't be right.
Perhaps it is once again one of the boards that are lost because GIB is taking a bluff in consideration - I think that mechanics should be removed