OK, but you’ve tried this – and not had my results – on a Mac, right?
– i.e., this could be platform-related, couldn’t it?
If you’ll confirm that you have, what I’ll do is the following (via LICEcap):
– Disable all shields . . . the standard result will appear & GMail will reload in the background
– Re-enable all shields . . . GMail will reload again
– Select “All device recognition allowed” . . . GMail will reload again
If I have the same results I’ve had to date, as GMail reloads in the background device recognition will again show as being blocked in the dialog box (without any input from me).
Does that sound about right (i.e., what you want to see)?
BTW, are there any other settings (including on the Mac itself) that could be affecting this?