This might be a design choice but it just feels off in a way that makes me question that.
As you can see (If the image works) the settlement Khazid Irkulaz is oriented in a strange way, making it feel like it is blocking the pass which it didn't do in ME
As a reference here is Karak Kadrin
The screenshots were taken using the mod Simple Dynamic Settlements, I have started new games as the Bonerattlaz with an unmodded version of the game and it is still happening. (Again, it could be intentional)
Build number: v2.0.0 Build 15717.2658933
Save file, modified.log and DxDiag are attached