Well, should have made the pg in ts. The original code sure has borderCoordinates as number[][].
In any case, this is an example - albeit maybe not a very helpful one. The bounding boxes in the inspector not being drawn happens occasionally, on glb assets, and it’s difficult to reproduce. Had it the other day, double checked… and then it just started working.
There are not integers in js, just by the way. Number is a 64 bit float in sane VMs. You can exactly represent every int32 with double precision floats, tho.
edit: I mean it does have BigInt for some time now, but everyone seems to insist in BigNumber.js