Just did some testing on this and the issue seems to be that the bombs are spawned above the plane, they then land on the hitboxes and can then slide off.
I think we just need some adjustments to where the bombs get released.

This problem seems to be worse in the latest version. People are having to fly downwards in order to be able to drop bombs properly.

This bug seems very outdated and i am unable to reproduce the descripted issue. It should therefore be closed