cin_vhetin

I just tried another map, and this time a floating dungeon formed as well as a forest. 

I just git pulled and made a new v6 map, and it happened again. 

Ok, it's not just the Minetest protocol. I recently updated my normal Freeminer server, and now it too has floating trees. It's been up since December with no floating trees,...

Nope.

For what it's worth, it happens with different texture packs too. Also, it may be worth noting that this doesn't happen in the Minetest app.   Minetest: 

Just recently I noticed this also happens when digging a node. Certain pixels become transparent when the cracks appear.

Water too: 

I couldn't find anything specific about the video card, but I hope this helps: http://www.cnet.com/products/amazon-fire-hd-6/specs/

CPU: Quad-core MediaTek MT8135 1.5 GHz GPU: Imagination Technologies PowerVR Series6 RAM: 1GB More info about the CPU: http://en.m.wikipedia.org/wiki/MediaTek MT8135 More info about the GPU: http://en.m.wikipedia.org/wiki/PowerVR Series6

Yes