savegame is attached. they got stuck ~20min after the update. fun new info: in the map view, i see 2 biters just sitting there, near 3 radars in the north. but as soon as i run up there by myself, they continue to attack my defenseline, which i can barely observe on the minimap. i am using a number ...

Just installed 0.17.70, biters are still getting stuck during an attack wave. (savegame is from 0.17.69, but should be irrelevant, no?)