When using the external camera, mirrors and gauges on the cockpit are turned black (not displayed/rendered).

When I use personalized view, it's correctly rendered, but not with the external view.

Could be nice to have it with "follow the car" camera

had always thought that when they changed the option in the custom view, it applied to the external view as well, but it seems it still doesn't. I'd add a +1 for it being a third option (In-Car, Custom, All Views as the 3 options)

But this is an option?

When you select real mirror & gauges it should be visible with all views, including external views. So using GTI with external view I should be able to see working mirrors and when using FO8 I should be able to see working cockpit gauges

You can have visible gauges in custom view inside the car, if that was what you were after. One picture tells more than 1000 words, so take a look at the attachment

That's only for custom views. Chase and external shots always show black mirrrors and gauges.

its a minor problem. I just learnt to live with it.

but i don't know if it's a bug or a misimplemented feature

it would be nice one