I have found these two, but there may be more wrongly spawning events here.
I believe same issue can happen at the lumber west of the map, north from Myshkino military tents ( ~ 920.63, 7618.59 )
[once I was checking it when first found this "bug", and if I remember right that place also had this issue]
Position: <12396.780273, 23.368374, 14327.218750> (this is approximated position of both pile events)