[2020] Why are the map textures unloaded and a blue texture appear? (topic is closed)

Can you post a screenshot of what you're seeing?

Does it also happen if you add the launch options -noWorkshop and -disableMods and start a new city?

To add launch options:
- Right-click on the game title under the Library in Steam and select Properties.
- Under the General tab click the Set launch options... button.
- Enter the launch options you wish to apply (be sure to separate each code with a space) and click OK.
- Close the game's Properties window and launch the game.

They reset the game to how it is without mods or workshop content, which is useful for figuring out where the problem is. Bugs show up with the launch option, while mod issues do not. :)