The End is showing only black areas(like squares and triangles) and the normal sky background. I cannot place blocks.

Please attach a screenshot.

Please force a crash by pressing F3 + C for 10 seconds while in-game and attach the crash report ([minecraft/crash-reports/crash-<DATE>-client.txt|http://hopper.minecraft.net/help/finding-minecraft-data-folder]) here.

Duplicate of MC-41822.