Bombers can’t bomb corners

[Boring]

I’ve seen multiple time bombers becoming unable to bomb buildings place at the corners of a fully expanded base (all forests clear).
You can deploy them multiple times, they will fly around and bomb, but repeatedly and completely miss the corner building.

 

[calvarium]

You can deploy bomber little off position from the target. They will automatically travel to the remaining buildings, solving your problem. This happens to transports as well. So, drop paratroopers near the building is faster than directly targeting it. Hope this helps you.