Am I overreacting ?

So my boyfriend was previously married, he has children with his ex wife. She is nothing but drama ( I know her personally). she went to my child’s father and said so many lies and started up drama. Anyways him and I had a talk that when she drops the kids off she does not need to come into the house at all. He can go outside and get the children or she can come to the door but stay outside. Well tonight she dropped the kids off (he didn’t even tell me they were coming over, which is not a problem, but I would have like to known) when she dropped them off she just walked right into the house and hung out for like 10 minutes. When I mention something about it I feel like he ignores me, but there is no reason for her to come onto the house I feel, like she wasn’t even invited in, just walked on in. He is also swears that he doesn’t care what she does in her personal life, but he is always ranting about it. Am I overreacting? Or do I have a right to be irritated about this.🤦🏼‍♀️