[Q] stock keyboard irregularity topic

im using the stock samsung keyboard on my att s4 for texting inside google hangouts. i got the autocorrect feture a while back where it gives the sweeping replacement arrow on the left of the suggestions box then the two other suggested words on the center and right boxes, one day the arrow disappeared and the whole system acted more like the apple set up and i had three suggestions words and no arrow and the spacebar would auto replace with a spelling correction. now out of nowhere it has switched back to the sweeping arrow again. what am i missing here? i liked the three word setup much more. is this a setting im missing somehow of what??? or some sort of updated happening behind the scenes??

AT&T Galaxy i337 S4 MK2 rooted.