IOS 18 and group messages with android users

I updated my iPhone 15 pro max to iOS 18 and ever since the addition of RCS texting my phone removes one of the users in a group message and then I don't have the ability to respond in that message. It removes the bar where you type your message. Then, it will randomly add that person back into the group chat until it decides to remove them again. It (or something) prevents the person that it removes from creating a new group message with me in it. I've tried rebooting the phone several times, deleting all of the groups with that person in it and creating new ones and get the same results. I have disabled and re-enabled the RCS messaging toggle and still have the same thing. The other two people in the group message are both android users, but it only removes one, and always the same one. I can see the group message on my MacBook and they were able to receive my message from there.

I can text this person individually and they receive my messages and can respond to me.

Anyone else having this issue and what did you find fixed it?