Structure Blocks re-enable outlines on loading world.

I've been building an adventure map and I've been dealing with an issue with Structure Blocks and their option to display their outlines.

The Problem: whenever I place down a Structure Block, I'll set it to not display the outline (or bounding box), but when I save and reload the world, the outlines are re-enabled. Normally I wouldn't have a problem with this, however I have over +1000 structure blocks and with so many structure blocks displaying outlines, it tends to devour my fps due to the massive rendering overhead...

There's also a small bug that occurs when using more than 30 or so Structure Blocks where I'll delete the Structure Blocks and the outlines will still be there.