Button's HUD stats are 40/5, Button's are 50/0. Is this donked up? Where's my check-down convention when I need it?

PokerStars No-Limit Hold'em, $0.10 BB (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($10.15)
CO ($10.40)
Button ($2.85)
SB ($10.20)
BB ($7.80)
UTG ($3.50)
UTG+1 ($10.55)
MP1 ($10)

Preflop: Hero is MP2 with A, T.
3 folds, Hero raises to $0.4, 1 fold, Button calls $0.40, 1 fold, BB calls $0.30.

Flop: ($1.25) 5, J, A (3 players)
BB checks, Hero bets $1, Button raises to $2.45, BB calls $2.45, Hero calls $1.45.

Turn: ($8.60) 9 (3 players)
BB checks, Hero checks.

River: ($8.60) 5 (3 players)
BB checks, Hero checks.

Final Pot: $8.60