Validation doesn't prevent placement in eye (suicide)

[blahedo]

The validator, at least on "advanced validation", should reject placements into an opponent's eye.
In this screenshot, the randombot (white) has submitted a placement at C10, which is illegal as it is surrounded by black stones and thus violates the "no suicide" rule:

Game # 5797941e3a0ac6306cd86c11 (advanced validation is selected for this game)

[blahedo]

On the other hand, sometimes it seems to be rejecting seeming-suicides even when it shouldn't (see #17).