Minecraft wiki entry for Development_versions, associated text: MC-134816 – Crash: Exception ticking world entities
MC-134825 – Tab completion/suggestions don't work for some non-literal arguments (in chat)
MC-134832 – TNT with unstable=true blockstate is ignited instead of broken in creative mode.
MC-134898 – Pressing Escape no longer returns to main menu from singleplayer menu.