Hello everyone,   I'm loving Pixi so far, but have run in to a bit of a problem. When using spines, any regions using meshes fail to appear. No errors are thrown, everything else functions correctly, and normal regions appear as expected.   The odd thing is, this seems to be a fixed issue. Similar problems were encountered a while ago (https://github.com/pixijs/pixi-spine/issues/10, https://github.com/pixijs/pixi-spine/issues/35), but the issue was fixed and closed. I have confirmed (many times,