Solution!
I had this issue and, accidentally (while searching for a solution on here!) I found the solution myself. In settings, I had the view distance on low and when I put it back on high all the missing textures, like walls, ledges bridges etc. showed up! And the best thing of all, they stayed like that even after turning the view distance back to low!
So apparently, if you load into a lot in Windenburg while view distance is set to low, the game doesn't now what to show you, so it just doesn't. But everything is fixed once you change the settings.
Haven't tested this on any world (or had any problems in them for that matter) so I can't tell if this fixed other worlds too.
Hope this helps!
