I already made a bug report about this, but this is also kind of a feature request.
When in probing mode, clicking the top view button or double clicking the map does not actually make you view from the top, but from a slight angle. This can be easily observed when starting up the system map, and then clicking the top view button. Your view will actually shift a few degrees.
Why is that annoying? When you move probes in fake top view so that they seem to be directly below/above your target, they are actually not, but can, depending on the distance, be up to a few AU misaligned, which is unneccessary, as correcting this error should not be too much of a problem.
Thanks for reading!