Possible bug with IntPoint in BP w/editor?

I’ve added a const array of IntPoints to my BP, however, I can’t set the values to negative values or zero, they just reset to one. My workaround is to set them in the ctor script (I only need a few) which seems to work, but it’s an odd thing to do.

I also ran into this bug today in 4.18.3. IntPoints only allow me to set values from 1.