It seems that I cannot simply begin the siege on a city surrounded by Ruins tiles because the game tells me it's "the wrong District type".

On the one hand, I think lends itself to interesting tactical considerations as pertains to which tiles to clear ruins from, but it seems silly that Ruins then don't grant any defensive or fortification bonuses in battle, given that the game treats them as open ground. Also, it seems silly that I was then able to begin the siege by moving my units on top of the Makers quarter several tiles away.

Steps to Reproduce:

- Attempt to besiege a city surrounded by Ruins tiles, as in the attached save file

Screenshot:

20210824081922_1.jpg

Save file:

auto-save 3765.ctr