Terrain Chunks Unloading?

I haven't been able to finish or release 2 of my maps because of this strange bug that has been plaguing them. I'm not sure if this is a Torque3D bug or if its specific to this game, but I cannot find any solution to it. Basically, at random places in my terrains, the terrain "chunks" (Or are they called tiles?) will unload and disappear as you get close to the ground. Everything on top of them will remain though, like grass layers, roads, foliage, and objects. Here's a GIF I made that shows the bug perfectly. Take note, not every part of the terrain does this, only certain areas randomly...for instance in the GIF, this is happening where I recently made an island. Also note that this map is at the max resolution of 4096. the other map that has this bug however is 2048.

 

I usually get this when I make lots of terrain edits, but saving and reloading the game fixes it for me..