The city names no longer show, I can scroll but can't click on anything. I tried pressing every key to no avail. What's this...?
It seems this is some mods clashing with each other: CQUI got disabled because it was incompatible with GS and so I went and installed other mods doing similar things. Then a few days ago it got a new release and it got enabled and it crashed the game in this strange way. Manually disabling CQUI solved it -- I was able to reproduce it steadily by reloading but after disabling CQUI it never happened again.
This is confirmed on steam: