I drafted a pawn and put him inside a pen during a toxic fallout and he doesn't get toxic buildup.
Does that pen got a roof ? Toogle roof display.
Then why the heck you are surprised not geting wet ?
i said nothing about not getting wet you buffoon
Maybe try putting animals in the fence for a while and check? Strip the pawn?
The clothes may have prevented the toxic.
Are there any other possible factors? No mods?
I tried to reproduce the issue by doing this:
a. Have a colony with at least two pawns
b. Activate the Development Mode on the options menu
c. Activate God Mode and create a fenced in area
d. Send one pawn inside the fenced in area, and keep one pawn outside of it
e. On the Debug Actions menu choose Do Incident (Map)... > ToxicFallout [NO]
f. Wait a min or two until the pawn outside the fence have built up toxic fallout
g. Check other pawn for toxic fallout build-up
Doing this the pawn inside the fenced area did receive toxic buildup as intended on my end.
I performed the test with an without a wooden pen marker, as well as having a purely fenced area and a fence connect to a building. I tested this on version 1.3.3061 so it might already gotten patched, but if you saved a backup of the incident and still experience this issue on that save then it would be helpful if you could upload it. :3
Moderator Note:
I also can not reproduce this issue. If you continue to have this error, repost your bug and follow the steps in our 'how to post a bug' sticky topic. A save would be crucial to this. Also report if you are using mods.