I have noticed this repeatedly.
I acquire a country and click ready. Instead of "Wait for next turn to begin...", the game still says "please select a country". The only solution seems to be to rejoin the game, sometimes repeatedly.
When this happens i can click on any city and view the exact units stationed there.
I have also noticed one case where i picked a country, but the game insisted it was taken. I was the only non-player in the game, and the chat box did not indicate anyone else had joined. I had to rejoin multiple times, and wait for 2 turns to pass, before i saw that someone connected and picked that country.