Hulu question

Hi. Im new to Hulu. My sister let's me use her account to watch bobs burgers. Sometimes at the end of an episode it plays a different show instead of going to the next episode of bobs burgers. So I have to go back to the main menu and play the next episode. Why does it do that? Its annoying because sometimes my daughter watches doc mcstuffin and then it will randomly change to some adult show like law and order.... help?