The quest letters (both coalition and IFR) are only Interactability_Text_Line_0/1/2/3.
Nothing special there.

And there's a hole at the entrance of a tunnel/cave in an unlisted place above Westport Campground.
You can literally fall off the map.

IFR quest line, first shop, the orel magazine doesn't show up, just an empty line 0x.

Quest: Drink Run
Enough to clear horde beacon and it let me finish the quest with finding only 4/6 six-packs of soda.

Quest: Lost in Translation
Can't normally get the quest from August, it keeps to pop up.
Can't finish the quest since I can't pick up the letter from an unlisted IFR base above Limerick.

Quest: Arms Capture
Can't find 4/4 Ammo Crate, only found 3 around the entire place in Aberhem Anti Air Line.