Floating poop baby

Hello. We are using reusable diapers. Since introducing solids the poop is more solid, so I just throw it into the toilet. I have noticed that the poop almost always floats on water. I am wondering if this is normal? If she doesn’t poop for a day between, then the poop is harder and it sinks. But if she goes regularly, it almost always flows and I am getting worried because I have never noticed this with myself or heard of anything similar. Have any of you experienced floating baby poop when breastfeeding and solids combined?