After the second stage of Russian aggression on Ukraine in 2022 the Yandex maps have removed country borders entirely. It is actually a very interesting map to look at:

https://yandex.com/maps

I believe it was in response to the annexation of territories/oblasts that Russia didn't even control (lol), when companies in Russia were forced to respect the new official borders of Russia.

I was never a fan of these maps for timezone selection anyway. MacOS clung onto it a bit longer, but they were too small - some areas are too dense with timezones and using the pointer to select an area on the map always seemed to get it wrong.