tug0fwar

In Windows 10 (Version: 1909, OS build: 18363.1316), listed under 'Quick access' is this 'Scans' directory created by Windows. Once inside, clicking on the address bar shows this string:

'C:\Users\Username\Pictures\Microsoft.WindowsScan_8wekyb3d8bbwe!App\Scans'

While I was logged into an AWS Educate account in a portable Chromium instance, I just opened Firefox (also a portable instance) and was asked to import the logins from Chromium 'for this specific site'. How does Firefox know I've saved logins for this particular website in another Browser?

Default browser is Edge, which I only use for 127.0.0.1:/ and pdfs (just to clarify things a little)