Thanks Do Lee ;-)

I put your machine translated text below to make it easier for our developers to follow.  It would have also been easier if you added this follow up in the same thread as the other post.  However, thank you for this and I'll move this to support for investigation before handing to development.

Unknown said:

This is the second article on the same bug. 
Here is a link to the first post:

Ghost character - language specific problem (eg "Korean")
community.sdl.com/.../19317

 Serious bugs appear when using Korean in the SDL Trados Stduio editor. 
This is a bug that does not occur at all when using English.

This is a bug that most recently typed "one character" behaves unfavorably. 
There are two patterns of undesirable behavior.

Bug Case 1
- One character moves along the active caret. 
-SDL This is a bug identified in the Trados Studio editor. 
- A bug in the rich text box and combo box of the control of the winform created in the view part.

Bug Case 2 
- One character simply disappears when the active caret moves. 
- A bug in the text box of the control of the WinForm created in the view part.

I do not know the cause of the bug and how to fix it, but I can reproduce the bug exactly. 
The bug occurs at the strange intermediate stage of the SDL Trados Studio editor where you type Hangul.

If you look at the "2" in the attached photo 
, dotted lines (three dots) can be seen in the lower part of the character being created inside the red circle. 
This is a strange intermediate step.

English does not have these steps. 
English is "1" in the attached photo.

Moving the active caret by "clicking" with the mouse anywhere else in the editor in step "2" of the attached photo will move 
that letter along with the caret as described in bug case 1. 
"3" in the attached photo is the result. 
Because you clicked on the front of the segment, 
the letter moved to the beginning with the caret.

If 
you move the active caret to the text box control of the view part in step "2" of the attached photo, one 
character that was being created simply disappears. 
"4" in the attached photo is the result.

If 
you move the active caret to the rich text box control of the view part in step "2" of the attached photo, 
the character you are composing moves along with the caret along with it. 
"5" of the attached photograph is the appearance. 

If 
you move the active caret to the view part's combo box control in step "2" of the attached photo, 
the character you were composing moves along with the caret. 
"6" of the attached photograph is the appearance.

If you encounter such a bug during actual translation work, it will be very difficult. 
This is a bug that should never happen.

Good work

Thanks

1st post, nobody was answering it up until now.
So, I made this 2nd post.
But, more importantly, current post is far more elaborated than the previous one.
at the 1st one, I just met it accidentally, now I'm confirming it deliberately.

I am hoping SDL make a good remedy.

China....
I do not know who are working there and do not know exact input procedures of real-Chinese though,
I just confirmed that, with my Korean-Chinese input environments this Bug is not reproduced at all.
I guess, If SDL want to fix this Bug, the engineer in charge should use Korean (environment) specifically.

regards

Yes, it looks like that.
Thanks
(You know what, they do nothing about 'Sales' in recent couple of years, in my own experience in here Korea.)
(as far as 'retail' Sales..)