The line position will change if saving a file in word-wrap mode

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Open a long_document.txt file with many (more than 100) lines. Some of them 
are long lines with more than 200~300 characters or even more.
2. Turn on the word-wrap mode.
3. Go to the middle of the file, press CRTL+S.

What is the expected output? What do you see instead?
I expect the current screen is not changed. Instead, the current line "jumps" 
up several lines, sometimes it jumps up to be the first line shown on screen. 
Therefore I can not see the earlier part of my document.txt, this is not good 
for writing a long document.

What version of the product are you using? On what operating system?
Ulipad 4.0 on Windows XP.

Please provide any additional information below.
Do I need to translate all above into Chinese?

Original issue reported on code.google.com by RayLuo....@gmail.com on 8 Sep 2010 at 4:32

[GoogleCodeExporter]

I've not found your problem at all. I created a txt file with many long-line 
just like what you said, and move the caret to the middle of the file, and then 
press Ctrl-S, then the caret is still there, the screen has no changed.

Original comment by limo...@gmail.com on 8 Sep 2010 at 4:49