There are some web sites which identify the advert suppression techniques in Firefox. They fight these techniques by reloading the content frequently in order to force adverts to the visitors, thus making it impossible to see all provided images of the page since the web site reloads the page. Example: mobile.de. This is really annoying since the adverts (vertical on each side of the content) are visible half-way only (not full relational), as can be witnessed on Brave and Edge. Chrome, however, can delete these adverts and doesn't get caught. Please look into it and do not get caught as well, thanx 🙂