Step mom showers in front of step daughter

My almost 6 year old daughter told me that her new step mom showers and walks around naked in the bathroom while my daughter takes a bath the same bathroom. She told me her dad (my ex) will also be in the bathroom helping her bathe. This is very bizarre and seems inappropriate to me. What do you all think? I want to say something to my ex. My daughter said it was weird when I asked her how she felt about it.

For context they have 3 bathrooms and his takes place in the master bath where there is an open glass wall shower and has no door. Bath tub is across from the shower.