I tried something of the same, also with Pacific.

I chased an OESD, and called some hefty bets, though with many in the pot, so I had decent odds.

I hit it on the river, and make the nuts, one player goes all-in in front of me, and my hand insta folds.

"Fold in turn" was NOT checked. And I was in Firefox at the time it happend (checked HH to see what happend).

To make a long story short, I mailed Pacific, and got the bets I put in the hand refunded, as they could see it looked very odd. I did however, miss a really great pot, but guess it was better than nothing. :-S