Minecraft wiki entry for Development_versions, associated text: MC-51418 – Changing brightness/gamma above in-game limit using options.txt.
MC-94161 – Boat paddles in the inventory are oak instead of their respective wood type.
MC-100923 – Entities with knockback resistance can get knocked back using Punch.
MC-149805 – While editing a book, player cannot use Ctrl + Home or Ctrl + End to jump to the beginning or end of the text.
MC-165503 – Fence gates (between walls) aren't affected by ambient occlusion/smooth lighting.
MC-176081 – Striders with NoAI still get cold.
MC-177321 – Soul sand doesn't have smooth lighting / ambient occlusion.
MC-179916 – Foxes path towards origin (0,0) during a thunderstorm.
MC-189214 – Modifying the type compound of the end dimension erases the dragon fight.
MC-190661 – Pressing Esc or using the Cancel button in the "Experimental Settings" warning returns to main menu.
MC-197854 – Cannot use Ctrl + ← Backspace to delete entire words in Edit sign GUI.
MC-236149 – Cannot use Ctrl + ← Backspace to delete words in the book and quill GUI.
MC-236212 – Cannot use Ctrl + Arrow to navigate the cursor between words in the book and quill GUI.
MC-238009 – Some end cities can generate floating above the ground.
MC-239019 – /locatebiome command doesn't consistently locate the nearest cave biome.
MC-248621 – TagKey creation leads to memory leak.