Dear Ustimenko
Thanks for attention and response.
I am not Developer but IO Psychologist so its take time to find and send answers of your simple questions :))
Here they are
* php version 5.4.39
* mysql version 5.5.31 gpl ver.10
* current theme variant of 2011 theme
* current active plugins alot
It is not UTF8 or theme issue (remind Chines).
I do step by step your advices but doesn’t work. There is no conflict between plugins.
I find a Hack by using a visual editor plug-in and the topic is solved now.
I find some other probably bugs if my attempts doesn’t work, I will ask for your support or share the solutions. May be related to my theme personalization.
Again, This plugin is a great work and I appreciate that