Just playing the survival stress test 55, on an US NE server, and I was going up north, and when reached the town of Mogilevka, I noticed there were no infected around.
As I looted through the city, I came across the long barns in the town, all the infected were accumulated in one area, outside the barn. Instead of being dispered around the town.
this made looting the town easier, hopefully you can spread out the infected in Mogilevka, and in a handful of other areas/towns, where this bug exists.
*cannot even upload images or video to the feedback tracker right now* But the infected were all grouped up outside the long barn, to the North East of Mogilevka.