Changing password doesn't reset session ID

So around a week ago, my Minecraft account was compromised, and the person who compromised me have my password before I changed it. But even after I changed my password, the person who compromised my account still have access to my account for some reason. And I am suspecting that it's because of the automatic login feature that exists in the Minecraft login page.

 

So I'm currently waiting for my session ID to expire, but soon I realised that even if the session ID expires, the person who compromised my account can still have access to my account because they logged onto my account once, and with the auto login feature, they can still login whenever they want.

 

So I wanted to ask is there a way to disable the feature, so I can have better account protection. Any help will be really appreciated.

Thanks!