fountain of health disappearance?

i have plateau raised up one lvl
on the plateau there is a house and a fountain of health and two ramps on the north and south leading down to the other areas

sometimes, like maybe 1/20 times, when i run the map, the fountain of health will not be there
i tried moving the fountain closer in from the edge but it still happens

why does it disappear sometimes?

some wierd glitch maybe?? We would need more info to find exact problem/

nvm, i figured it out, there was a action i forgot to replace in a extra trigger that explodes the fountain

I lose more fountains that way.