Bug with Japanese input

Theres a bug when inputting Japanese. A capital letter of ANY Japanese word automatically shows up and remains. For instance, when inputting おはよう (Ohayo) in Japanese, "o" shows up like "oおはよう" for some reason. This problem didnt happen before updating to iOS8 and doesnt happen with inputting English!

Another bug here. After the latest update, inputing Japanese does not work AT ALL. Everything completely messed up... Worst update ever... Pls fix asap!!!

Muuger about GroupMe, v5.1.0