PB GetSortedThreats value is NaN

[empireu]

Is this a multiplayer or singleplayer bug?

Singleplayer (not tested on MP)

Describe the bug:

GetSortedThreats in the PB API returns results with a NaN threat level only for a specific grid I am testing. I am not sure why this grid only is causing it. The weapons do seem to work fine.

[empireu]

After more testing, it seems to be a problem with many more grids and on MP as well.

[BDCarrillo]

Link a world please, with grids setup to reproduce this issue.