Is it a fault: penetrate under the net when the feet are completely in opponent's space, but not on the court?

Question

It is easier to watch this video (vk.com, Russian social network) than explain

Libero of Sada Cruzeiro flew to the opponent's side but didn't touch the court with his feets. At the same time, his feet were in the opponent's space completely.

Rules allow this, in these sections:

• 11.2.1 - allow penetrating
• 11.2.2.1 - allow touching with a foot
• 11.2.2.2 - allow touching with any part of the body (excepting feet)

But also Rules has this fault-section, verbatim (but with my emphasis):

11.4.3 A player’s foot (feet) penetrates completely into the opponent's court.

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So, the question is: Am I right, that in the considered case libero didn't penetrate into the opponent's court? There could be other errors, but the main point of the question is libero's feet: they are in the opponent's space (assume, they don't touch the court). Is this a violation?

Update: Casebook // 2017-11-07

I've found this document: Referee Casebook 2017 (it is not listed on the site, but Google is our friend here). And do you know what? The action, described in this question is considered faulty there (see case 3.14); inexplicable but the fact

Update: New rules // 2019-01-06

I heard that the rules changed a little bit, and now such behavior is not considered as a fault anymore. Though, I can't find any proofs...

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Answer 1

The libero has not definitely committed a fault. As you note, the crucial rule here is 11.2.2.2; quoting from the 2017-2020 rules:

to touch the opponent’s court with any part of the body above the feet is permitted provided that it does not interfere with the opponent’s play

The libero's feet do not touch the opponent's court as he is playing the ball, and he is careful to move his feet back over the centre line when retreating to his own side. Hence, there is no violation of 11.2.2.2 in this instance.

However, if I were refereeing this, I would probably have said that the libero was interfering with the white team's play, violating 11.2.1:

It is permitted to penetrate into the opponent’s space under the net, provided that this does not interfere with the opponent’s play

This is a judgement call on the part of the first referee. In this example, the first referee is a professional referee and I'm not, so you should probably trust their judgement more than mine (the play was not called a fault).