Thank you, setting this to '0' solved the issue on my end. However I am not sure about '1' being the historical behavior on Linux, since Firefox wasn't scaling my text on previous versions under my Ubuntu system.
Another benefit of this idea is that it allows one to manually add fields that Firefox doesn't automatically identify, eg. forms that have more fields than just username-password. For example, my university's portal site has a "Date of birth code" ma...