removeOld() not working? Or locationCount not decrementing after removeOld()?

I've added this KD-tree to my bot as I do a ground-up rewrite of it. I'm not even to the point of extracting k.n.n. data from the tree yet, I was just in the process of testing dropping data into the tree, and noticed something odd. The tree isn't pruning when locationCount exceeds sizeLimit. Or if it is, then it's not being reflected in the value of locationCount.

I've set sizeLimit in the tree instantiation to a mere 35 as a test, and by the end of a 35 round match against Walls, the tree reports containing nearly 2000 nodes. After reading through the code, I don't see a lower bound on pruning the tree other than bucketSize, which is only 24 anyway. I've added a debug print message, and removeOld() is definitely being called, but is returning before the "weird" comment at the end of that method....

I'm sure I'm missing something... but what? Should I presume this is working as intended, despite the reported size() growing without bound?

Okay. A bit of testing with grabbing knn's via nearestNeighbor() shows that even if I request more knn points than. sizeLimit, the function only returns <= sizeLimit points. Excellent! So, is it problematic that locationCount (and thus the output of size() )is going to head without limit for Integer.MAX_VALUE and never gets decremented to reflect the current actual size of the tree? The former isn't much of a concern, RC matches are never that long.. but the latter?