Hi @Carl25910196njlw,
Sorry for the delayed response and the trouble you are facing. I hope this issue is resolved by now. If not, would you mind trying disabling snap to point and check? Also, you may create guides all around the after creating a rectangle and ensure smart guides (ctrl + u/ cmd + u) is on. This will act as an alarm whenever you accidentally move it.
Kindly update the discussion if you still need assistance with it. We'd be happy to help.
Regards,
Anshul SAini