iOS 7.1, IJN campaign:
I already mentioned that a Jap 500 lb bomb can hardly damage the flight deck of an Essex.
However, when it comes to shore bombardment, Jap bombs don't seem to be able to penetrate anything harder than a plum pudding!
500 lb:
Could not damage hangars (1" armor) and fuel tanks (no armor) in any shore bombardment mission despite several direct hits.
2000 lb:
Additionally, I could not even destroy an ammo dump!
Maybe the campaign file is somehow corrupted (see also the previous report)? But AFAIR I watched at least those invulnerable fuel tanks in earlier run-throughs as well.
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Rather a technical inaccuracy than a bug:
A WW2 Essex had 8x5" guns, not just 2. Irrelevant in so far as one will certainly not use a CV for gunnery duels.