UPD. The issue with Fog of war performance has been fixed: if a tank is damaged by an undetected enemy, the damage is done correctly and it is displayed in the module panel of the game interface.
On January 10, Fog of war* was switched off on the Global Map due to problems with the minimap - this specified issue was fixed and released on January 23, together with the special update .
We are glad to inform you that Fog of war will return to the Global Map on January 24 at 15:00 GMT, starting with the first battles.
*Fog of war means that both teams will have no information about each other's line-up until they detect enemy vehicles in battle.
You can read the full Clan Wars guide here.
Good luck on the battlefield!