I waited an hour and depleted fuel didnt cooled down is it bug from new version or the time is longer. (Yes i put spent fuel pool drum under water)

Please solve this equation to x
x²+3x-19=√(9x²)+6
x²+3x-19=3x+6
x²-19=6
√x²=√25
x = 5

Should be fixed in the current release.