After updating Minecraft on server I just logged in and the world has no textures. The blocks are there but I can see only mobs and animals. After moving more on the map some blocks were with textures. Seems like the world is broken now.
Updated world from 14w25b to 14w26a.
Bug only appears on server, not in single player.
Last image is how it looks like after generating new map.
MC-58881