Storm chaser bug

Not sure if this was mentioned before but there seems to be a bug with how storm chaser works or at least i think there is a bug. When i use this card and i have a bomb in my deck it pulls the bomb which is fine but then instead of getting a 5 mana or 6 mana spell i get a random one costing 3-4-5-6 mana, the description on the card specifically says draws a spell card costing 5 or more, please look into it.

This is working correctly.

Bomb is a 5 mana spell, so it is a valid draw with Storm Chaser.

Bomb has Casts When Drawn effect to trigger its damage effect and draw a card. This secondary effect of drawing a replacement card is the other card you get in hand which could also be a minion or weapon.