I found the reason as it happened again. My water reserve was on the edge of minimum which looks green but was too low for my dwellers. They get radiated. The radiation faded away after getting enough water for longer time.

All dwellers are radiated - how could this happen?
i tried searching for this on google but i came up empty. i want to know how to lock object 2 5 inches away from the corner of object 1? i want it to stay 5 inches away even if i re-scale.

can someone please help me? how do i lock cube 2 5 inches away from the edge of objects 1?

here is an image of what i want to do:



EDIT:
i want to offset "cube 2" 5 inches away from the bottom right vertex of "cube 1" no matter where "cube 1" is?

so if i move or scale "cube 1", "cube 2" would still be offset 5 inches from the bottom right vertex of "cube 1"
