I'll be as simple as I can -
I very often turn OFF the auto arranger and just play the bass part MANUALLY.
Sometimes, when I leave the arranger on, I STILL play the full chords with the right hand because it adds "my feel" to the song.
I treat the rhythm section (everything to the left of the split point)as a group of sidemen, and NOT the feature.
Some of us played solo entertainer gigs long before the auto stuff was around. This is how I began, and it's very natural to me to be the bass player AND the piano player at the same time. Auto accmt is not always a helpful feature for me.