Is this not a legal serve ? Lebrun brothers TTR challenge in doubles match at China smash

[MatthewY]

I was looking at this video


See attachment (The ball is on the right side of the center line looking from the server's side)
This is at around 0:47 minute on above video
It looks like the ball is touching the center line tough 90% of the ball is on the wrong court
I think it is still a legal serve as any part of the ball touches the center line even if on wrong side of the center line

But here the umpire calls it out & TTR agrees (challenge by Lebrun brothers unsuccessful though it should have been successful)

What do you think

[Phankha]

I do not know what the rule is in table tennis but in tennis I have seen it being called a legal serve etc.