I had a couple of settlers spend a whole day trying to walk through a wall into the new shopping centre and pub I'd built. The entrance was a few yards around the corner.
I also had one stuck on the bottom step of the few steps up to the entrance, just bobbing up and down a little as they tried and failed to step up from the ground to the steps. I had to order them to step away and replace the steps with a very short ladder. It turns out that settlers can't understand a 6 inch gap.
The funniest glitch I've had so far was the pack brahmin that somehow managed to end up stuck in the ruined roof of one the buildings in Sanctuary. There is no access to that roof unless you can jump from ground level to it or climb to the roof of a nearby 3 storey building and jump down and across to the roof. Who knew brahmin were such extraordinary jumpers?
It's Bethesda. Glitches are to be be expected.
Yeah had all of them. One of my shopkeepers is stuck in a two story building trying to walk out via a wall and obviously getting nowhere. I had a Brahmin clipped and stuck in a tato plant - I had to destroy the plant via the console to free the muppet.