[2022] Display Problem: No underground view, no bus route view.

Toggleable Whiteness is a mod that is supposed to stop the automatic switch of views, so if you have that subscribed it would explain the switch not happening. With that mod you toggle it automatically by selecting the InfoView on the var on the left.

Transport lines should still be visible though. This reminds me of an issue with Transport Line Render Fix, which has become obsolete and now causes invisible transport lines. But that's been obsolete since Sunset Harbor was released and shouldn't be used anymore.

An easy way to test if it's caused by mods is to add the launch options -noWorkshop and -disableMods to Steam, then test on a new save. If the issue is gone, it's likely caused by mods.

How To Set Launch Options

• Right-click on the game title under the Library in Steam and select Properties.
  
• Enter the launch options you wish to apply in the box (be sure to separate each code with a space). Should look like this:
  -noWorkshop -disableMods
• Close the game's Properties window and launch the game.