It does seem to cross some boundaries there. Most children, outgrow that type of attachment to their parents, usually before the age of 5, if not younger.

I am raising three boys, as a single mom, and even on the off chance, they walk in on me, in my bedroom changing, I don't make a mountain out of a molehill, at the same time, I turn away, so the worst they may see, is my derriere, which, we all have that. And then, I ask they give me back my privacy, to finish changing.

I find, I'm raising boys with a healthy sense of self, in that regard. They are capable of bathing themselves, sometimes where my younger two, are still on the younger spectrum, I help with hair washing. And then, they have the tub, to themselves, within earshot, of course.

I have a 6.5 year old son, myself. He's my youngest. Showering, together stopped around 3/4 years old. I don't want, their level of awareness, to include an 'image' of my body, if that makes sense?

Hope you, find a way to resolve, your own discomfort. Perhaps, establishing a level of boundaries surrounding privacy?