Game Corruption

So, I have been playing on Minecraft and I've been idle sometimes. But when I come back, the textures are corrupt. This has happened 2 times but the 2nd time I couldn't fix it. The first time, I only had to reinstall MC.
I have been on Hypixel (an online server) and this has happened.
Please help! (THIS IS 1.8.9, I CAN'T SELECT IT FROM "Affects Versions")

(I use a different email for mojang and JIRA)

I can't take a screenshot because it crashes the game.