Okay, it seems that using subcategories (eg. Category|SubCategory) breaks this . Which is the one way I was keeping some semblance of variable organization. When you try to drag the category to reorder, the green checkmark pops up and says “Move Category X before Category Y?” and when you release, nothing happens. I guess I’ll have to drop all the subcategory organization I’ve done so that I can at least have them in an order that makes sense.
Game development needs to be tidy. This needs to be MUCH more user/developer friendly.