I found a bug where bets that exceed the effective stacks of the involved players are counted as an opportunity.
Player A enters the river with 60bb effective
Player B enters the river with 120bb effective
Pot size on the river is 90bb
Player B bets 120bb
My definition says to count a bet as an opportunity if the bet exceeds 80% of the pot.
In reality the bet size is 66.67% (60bb) of the pot since effective stacks are 60bb, but Notecaddy is counting this as an opportunity since player B bet 133% pot. I play on ACR in case the hand history format matters.