Every empty line becomes 2 empty lines after saving/closing/reopening document

[GoogleCodeExporter]

What steps will reproduce the problem?
1. Introduce an empty line between two lines of text. (Totally empty, not even 
a space character!)
2. Save the document and close it.
3. Open the same document again.

What is the expected output? What do you see instead?
Expected: to see the document as it was before.
Instead: every empty line has become two empty lines. Repeat the procedure and 
there are 4 lines, the next time 8, and so on.

What version of the product are you using? On what browser?
Version of the product? How would I know? I've never found any number.
Browser: Google Chrome 14.0.835.186 m

Please provide any additional information below.
Please note that the lines WITH characters do not get any additional linebreaks 
or newlines. Only the totally empty lines. This makes the bug differ a bit from 
issue 265, but it can be the same as issue 263 and issue 287. On the other hand 
we also have issue 193 and issue 226 - these report the opposite, disappearing 
empty lines. Please fix this very basic functionality, the misbehaviour is 
really annoying!

Original issue reported on code.google.com by navell...@gmail.com on 22 Sep 2011 at 2:34

[GoogleCodeExporter]

PS:
When I wrote "repeat the procedure" above, I meant step 2-3.

Issue 281 reports something very similar, but it seems like it says that new 
lines appear at all linebreaks (not only empty lines), and that the document 
just has to be closed/reopened (not saved) to give more linebreaks, but it's a 
bit unclear in the description.

Original comment by navell...@gmail.com on 23 Sep 2011 at 8:15

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[GoogleCodeExporter]

I would really like to see this one fixed. Makes the whole Latexlab unusable 
for me.

Original comment by santtu.v...@gmail.com on 25 Nov 2011 at 12:46

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