https://bugs.documentfoundation.org/show_bug.cgi?id=99102

--- Comment #4 from Regina Henschel <rb.hensc...@t-online.de> ---
It seems, that the problem is, that anti-aliased line rendering uses directly
gdi+ without own decomposition. (Windows 7 here). And gdi+ handles miter limit
different from LibreOffice. And without anti-aliasing the own decomposition is
used, which switches from line join 'miter' to 'bevel', if the angle is too
small. 

In addition, there is a real bug in bool WinSalGraphicsImpl::drawPolyLine 
(line#2018).
   const Gdiplus::REAL aMiterLimit(15.0); 
   aPen.SetMiterLimit(aMiterLimit);
uses the default 15° MiterMinimum_Angle_, but gdi+ expects a MiterLimit, which
is the ratio of MiterLength to stroke-width. Correcting that error, I get
nearly the same cuts of the tips as rendered in PowerPoint.

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