There are three separate double-scan problems:
- surface scanning: it scans,reports success in text, but not in the scanner, KEEPS ON SCANNING, reports success
- discovery scanning: you ping the system, it reports nothing (except the one you get for being close); you do it again: it finds 25 bodies
- discovery scanning: you ping the system, it reports finding 25 bodies, but nothing appears on your scanner or navigation window; you scan again: they appear
All three happen ... basically all the time. As in, 1 in 5 systems I visit will have at least one of these 3 issues.
Edit: the first happened 4:23 BST, Boson Higgs, scanning HYPOE FLYI VI-T C6-326 1
If you want an example of the other two... well, any system I've visited in the last 2 days where I haven't (according to the system) discovered all of the bodies ;p