[2023] Cannot select different bus vheicles.

Is this with or without mods installed?

Please try verifying game files through Steam:
https://support.steampowered.com/kb_article.php?ref=2037-QEUH-3335

If that doesn't help, then I'll need you to make a report on our support forum here:
https://forum.paradoxplaza.com/forum/forums/support-bug-reports.879/

I'll just confirm here too that we're currently investigating the issue

The issue happens only when you own Green Cities, but not if you own both Green Cities and Natural Disasters. So some will likely not have it while others will unfortunately experience the bug.

Originally posted by Tigrovica:

Originally posted by CO_Avanya: The issue happens only when you own Green Cities, but not if you own both Green Cities and Natural Disasters. So some will likely not have it while others will unfortunately experience the bug.

So getting the Natural Disasters will fix the problem? LMFAO Talk about "Pay to Fix" 😂

Technically yes, but I would not consider that an actual fix. 😅 Green Cities needs to behave and let you select buses.