I don't know how often this happens or if this is a known bug, but I found an error in calculating the winnings of at least one hand

Known players:

0,05/0,1 No-Limit Hold'em (9 handed)
Hand recorder used for this poker hand: Elephant 0.69 by www.pokerstrategy.com.

Preflop: Hero is UTG1 with A:heart: , K:spade:
Hero raises to $0,40, UTG2 folds, MP1 calls $0,40, 2 folds, CO raises to $0,73 (All-In), BU calls $0,73, 2 folds, Hero raises to $3,70 (All-In), MP1 calls $1,73 (All-In), BU calls $2,97.

Flop: ($10,41) A:diamond: , T:club: , 7:club:
Turn: ($10,41) 6:spade:
River: ($10,41) 4:spade: (1 players)

Final Pot: $10,41

Results follow (highlight to see):
Hero shows a pair of aces (Ah Ks)
MP1 shows a pair of jacks (Js Jh)
BU shows a pair of aces (As Kc)
CO shows two pairs, aces and tens (Ac Ts)

CO wins with two pairs, aces and tens (Ac Ts)

As I calculate it, I come out pretty even here. However Elephant tells me I lost my whole stack in the hand.