Historical traffic data - near Russia-Belarus border

I did not check each and every country in the world to see if speeds history is absent. It seemed functional everywhere except Russia. In Belarus it was fine, but previously I examined Minsk only . Now, trying to figure where is the line between working and broken historical data let's see some roustes around Russia-Belarus border here https://www.waze.com/editor?env=row&lon=30.07857&lat=55.83259&zoom=0



Some animated gifs are below. We see speed estimations remain default all week in Russia; then there is some life in Belarus near the border, but then stops and is still for quite a while; then gets to life again.
So, if we say that traffic history broken in Belarus (or Uzbekistan, or in other country) we have to specify where exactly it is broken.