Why the fsck would they block Ukrainians? Makes no sense.
[1] https://bam.kalzumeus.com/archive/moving-money-international...
This is pretty common (simply by the size of the investments), and Yuri Milner's DST Global was in some funding rounds so they probably have a big stake.
Yuri Milner is exhibit A of how the offshore feeders fund a bunch of US tech startups, mostly for the alpha, but that also comes with influence
https://www.theatlantic.com/international/archive/2017/11/yu...
So, sanctions result in cutting off Russia, investors result in cutting off Ukraine ha.