“this recent glitch is causing a very small number of purchases to appear to sellers with the wrong ship-to information. If buyers notice this while they are completing checkout, they can contact the seller to let them know. Our Customer Support team has posted a message that appears in our Contact Us flow under ‘View and Report Site Issues.’ […]”
Similar issues have been reported before, but eBay claims that those reports have nothing to do with the current issue.
There is a bit of news: users can stay clear of such mishaps should use PayPal’s Shipping tools.