problem with subtitles are cut on sides

[myself]

i have a problem with subtitles
they are cut (and show (rest) parts are show on opposite side) if their size get over size of the screen
so then they are non readable

in menu > options > subtitles i have checked "auto resize font if line is too long"
the problem is only in full screen and presist in current v1.37 build 826 (same as in 1.3.6 build 824 and olders)

os: win xp pro sp2
cpu: intel celeron tualatin 1.3GHz
vga: nvidia geforce 4 ti 4200 (driver v56.72)
codec: ffdshow 20041012

thanks for any advise !