Metal bird covering angle on front of building that offers no privacy (8,4)
I believe the answer is:
goldfish bowl
'that offers no privacy' is the definition.
(goldfish bowl can mean a situation with no privacy)
'metal bird covering angle on front of' is the wordplay.
I cannot quite understand how this works, but
'metal' could be 'gold' (gold is a kind of metal) and 'gold' is found in the answer.
'bird' could be 'owl' (owl is a kind of bird) and 'owl' is present in the answer.
'angle' could be 'fish' (synonyms) and 'fish' is found within the answer.
A single letter 'b' remains which might be clued in a way I don't see.
This explanation may well be incorrect...
'building' acts as a link.
(Other definitions for goldfish bowl that I've seen before include "Very public situation, open to all onlookers" , "Occupants here supposedly forget" , "nowhere to hide" , "where Selima perished" , "Situation open to observation" .)