Kano, would you tell us, why this block has so few thx? 43.5 kB only.
Not Kano, but I would say it was probably found very quickly after the previous block was found on the network, so less transactions included in the block. Just my .02.

The block was found 20 seconds. After the previous block.
Since 10 minutes is normal time 600 to 20 = 30 to 1
30 x 43kb = about 1.3 mb
Since 1 mb is top size and 1/30 of it is 33.3kb.
So a 20 second block should be 33.3kb.
So Kano had a large block with 43 kb once time is factored in