Ufo suddenly invisible, bug?

[Kobold]

i spotted on my geoscape a ufo, but after he is in my range from my rockets (base defense) i cant see it no longer... is this a bug or a feature (stealth)?

ufo2.3 rev 30745

uploaded my savegame

[geever]

i spotted on my geoscape a ufo, but after he is in my range from my rockets (base defense) i cant see it no longer... is this a bug or a feature (stealth)?

Could be a feature, but this case was a bug. Fixed in r31032 (trunk), r31033 (branch_2.3).

-geever