Created attachment 134228 [details]
File to reproduce problem. It renders differently on Windows and Linux.
I found out that on Windows (tested on Windows XP and Windows 7) text with charHeight 10.89 renders as 10.8
At the same time on Linux (tested on Ubuntu 14.04 and Centos 7) it renders as 10.9
As a result included file fit in one line on Windows and in 2 on Linux.
Libreoffice 18.104.22.168 on each PC.
For books (about 200 pages in LibreOffice on Windows) we have 220 pages in LibreOffice on Linux.
Fonts are equal on each platform (Times New Roman).
Scale width 95%
Created attachment 134233 [details]
Comparison LibreOffice 5.3.3 on Linux and LibreOffice 5.3.3 on Windows 7
@Khaled, any comment on this?
Does it happen with other fonts, like Liberation Serif?
Oh, you are comparing Windows and Linux not different version of Windows. Looks like a duplicate of bug 105992.
Initially it was found on 5.2.x versions.
(In reply to Khaled Hosny from comment #3)
> Does it happen with other fonts, like Liberation Serif?
I suppose no. Writer does not let to set Height to 10.89 for Liberation Serif (Writer rounds it).
(In reply to Georgy from comment #5)
> Initially it was found on 5.2.x versions.
No idea then. I think the use of fractional font size might the culprit, but I don’t know how exactly.
I have reproduced the same behavior in openoffice 3.4.1 (compared Win 7 and Centos 7).
Looks like it is an old bug.
My wild guess is that we are rounding the font size somehow when loading fonts, and this rounding happens different between different platforms.
Created attachment 134287 [details]
Test for Arial font
The same problem appears while using Arial font.
Could somebody test it on Mac?
Writer behavior on MacOS is the same as on Linux (2 lines).
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The bug is still affects Libreoffice (6.5)
I suppose it happens because win vcl on uses win api to get line width.