I'm using Firefox 94.0.1 on MacOS 12.0.1. When I visit www.tangerine.ca I see a screen that looks similar to a mobile device layout (attached). Not exactly the same, but containing elements such as the hamburger menu and others that don't normally appear on this page. When I visit the same site on the same computer using the same browser in private viewing mode it displays correctly. It also displays correctly on other computers and using other browsers. The problem is isolated to Firefox in normal mode on one specific computer. I've deleted all cookies and cleared the cache entries for the site but the problem persists. Note that "Responsive Design Mode" is off. Any ideas what is being cached/used to cause this? There must be one more piece of information that I need to find and remove.