Maybe . . . in a Brave Browser New Window, go to: brave://settings/privacy
Click on Site and Shields Settings
You should see:
Scroll down further (and you will need to toggle some of the arrows, for the page to expand) . . .
Looking for settings in regard to sites being able to adjust, control Brave Browser. For example, where sites can manage protocols or windows.
Decide - in which cases - you want sites to NOT be so able.
Test that.
Otherwise, cookies sent from websites and stored by the Internet browser, can be part of what the website decides to do, about reloading its webpages.