I was playing on the play.wynncraft.com server, with the sphax 1.8 resource pack, music pack, and sound pack. On the 1.8 client, un-modded. I joined server 11 and went to around the coordinates 550,63,-1962 in XYZ format. I noticed my render distance was low, because I set it to four chunks for an adventure map. I cranked it up to 25 chunks after playing with the slider for a bit, and went back into the game. This happened (https://www.youtube.com/watch?v=1taMXtxRK8g&feature=youtu.be). I tried to reproduce the bug, and was able to reproduce it here (https://www.youtube.com/watch?v=8ta4WBJ3n_E&feature=youtu.be). Right after I stopped the video, A skeleton walked out from behind the painting with only a head and a bow. I flew back to look at everything and the glitch persisted. I was only able to reproduce the bug once, after it's initial occurrence. I'm sorry if this post is a bit much, and that you have to watch my videos, but I'm not really sure how to accurately describe this event in words.

What I expected to happen was...:
The game to load more chunks at once.

What actually happened was...:
Minecraft started showing me what I think is every loaded chunk sequentially.

Steps to Reproduce:
1. Load up Minecraft 1.8
2. Load the sphax resource packs
3. Log onto wynncraft, join server 11
4. Move the view distance slider from 4 to 25, jiggling it a bit along the way

Note, this only happened for me twice, the first time being unintentional, and the second being intentional. The server restarting might have fixed the glitch, since the wynncraft servers do restart after a while.