Bid greater than the ask

So this morning looking at my trading account, it shows AWC bid at $1.375, two sellers for a total of 2126 shares.
the ask is lower.
Could someone explain to me how this anomaly occurs?
Why wouldn't a seller at $1.25 see this and say well i will sell 2126 shares instead of however many they had originally posted at the price of $1.375?

i am a newbie
srm777