James,
I saw a very weird bridge which is made by a city. see below:
(https://cdn.discordapp.com/attachments/665986412641779712/677564672521535507/unknown.png)
The bridge starts from a flat tile, but the end tile has half-height slope.
Interesting. I do not believe that I have modified the code dealing with this, although I am not entirely sure now.
Can anyone confirm whether this can be reproduced in Standard?