Was wondering around Kozelsk yesterday. I've found that in the Hill 160 flag the concrete bunker has a small hole you cal crawl under. Location - near the main entrance (then turn left). You could crawl under the structure and get inside the wall. From the inside the wall, you could shoot through the wall and floors into enemy infantry (killed 24 of them suckers
) you can move around inside the wall with no penalties.I mean I liked that experience but still that is so far from intended gameplay.
If the same bunker is everywhere, then, possibly, the bug is common as well.