msg text short suddenly

Hi,
Your device model, Android version, web browser?

You just can't type the 68th character? Any error message?

Hi
My device is a Galaxy S4, with a Kitkat 4.4.2, and i use in my pc the Comodo Dragon.
When i type a sms text with more than 68th character, and when i send the message, the system multiplies in various msgs texts with 68th character, bat it only happens in a few days, and i don't now why !
Has you can see in the attach file, the system scaled in 4 msgs instead of only one (the 4 msgs that you can see is original 1 msg).

Thank you