Just so there no confusion or thinking this is a Mirage issue, testing this over other airframes like the A10, F18, F-16, JF-17 and Harrier, the behaviour is the same across all the platforms.
So that means that it is down to the user to practice and follow bombing tables. If you are curious to know what these may look like then you can have a look at the declassified bombing tables for the F-5 which should give you a rough estimation for what speed, and altitude you should be bombing at.