[2021] Summary of notable issues players are facing with GU 12

Several of the notable problems so far:

1. UPlay detecting Game Update 11 as the latest, downloading it and then installing it despite the fact that Game Update 12 is the latest and that you currently have Game Update 12 installed. This is intermittent: You can end up updating to v12, next time you run UPlay you get downgraded to v11, next time you run UPlay you get upgraded to v12 etc. It is baffling that UPlay makes no attempt to check what version of the game you have installed and if the update it detected is relevant.
2. When you get downgraded to v11 various UI assets don't load in-game, notably on the main menu. Verifying the integrity of the game files will resolve this, but it won't necessarily update you back to v12.
3. v11 and v12 configuration files are incompatible, so if you get downgraded and run the game all your settings will be reset. If you then upgrade from v11 to v12 all your settings are reset (if you ran v11).
4. Save Files made in v12 are not visible in-game when v11 is installed.
5. DRM server has become flaky recently, resulting in players being disconnected mid-gameplay with a misleading message that their Save Data is incompatible with the version of the game they're currently running. The message is a lie, you were kicked from the game because the game lost connection to the DRM server and locked access to all the DLC you paid for.
6. Certain game setting configurations like disabling Fog of War during match setup will break quests.

For the first issue, you can configure UPlay to not automatically update your games, and then if it tries to install a 466MB update you should cancel it immediately (this is Game Update 11)! Once you've canceled it you should repeatedly close and open UPlay until the Launch button for the game says "Play" instead of "Update". This will save you from wasting 2,500MB's of bandwidth per downgrade/update cycle (and the time it takes to download that much data).