Lo-Fi Games

I entered building mode, placed a saloon, then placed beds inside the saloon before hitting confirm.
Once the building was finished, i was unable to enter the saloon, as if the entire building was just a big chunk out of the navmesh, whether the door was open or not. Redrawing the navmesh did nothing.

I imported the game with buildings, and this seemed to fix it. My people entered the building, and started to construct the bed. However, i entered building mode again, and placed another 3 beds, and when i confirmed, the building suddenly reverted to non-walkable again. The characters that were constructing remained where they were, but as soon as any of them moved, they were immidiately pushed outside, and the building was once again unwalkable. Redrawing nav-mesh, saving/loading, all that fun stuff, did not fix the issue.

Once again, importing with buildings: the building's walls could be walked through, so i was able to finish constructing the beds, however when i redrew the navmesh to correct the walking through walls, it broke it once more.

in my experience if the navmesh doesn't like something it's useless to be stubborn. Reloading a save before you built the saloon, then building the saloon first and the beds one by one probably would fix your issue.

My base is on a flat hill, i've built ramps to access another hill nearby. The first two ramps did not allow my chars to walk on top of the hill like they are blocked by an invisible wall, a third ramp made it. If i try to delete the other two ramps that do not work, then the navmesh for the rest of the hill goes crazy again. The navmesh likes 3 ramps, 2 of them not working, and i have to live with 3 ramps or not use the hill at all.

Yeah... This is a bug report forum.
Not asking for a solution other than reporting an issue.