The version specifically targets the combat mechanics, dual-wielding, and endgame features introduced in Minecraft 1.9.
Look for sites that specifically host "Eaglercraft 1.9" or "Eaglercraft X" (the rebranded version). eaglercraft 19 launcher
If you are looking for a functional Eaglercraft 1.9 experience, a good launcher or client should offer: eaglercraft 19 launcher