Very off topic (sorry): does anyone have Steam VR launching when opening the linked story in latest stable Firefox on Windows 10?! It's annoying because it pop

Very off topic (sorry): does anyone have Steam VR launching when opening the linked story in latest stable Firefox on Windows 10?! It's annoying because it pops out multiples modals on my desktop (and complaning my HMD is not connected) and my mouse cursor starts to shutter.... Latest Steam Stable with Steam VR beta module on Windows 10 x64 Pro 1803 Edit: formatting Edit: found a way to disable: dom.vr.openvr.enabled in about:config (why does it trigger openvr?)