[Libreoffice-bugs] [Bug 134454] New: Font not rending marks glyph properly

[bugzilla-daemon at bugs.documentfoundation.org]

https://bugs.documentfoundation.org/show_bug.cgi?id=134454

            Bug ID: 134454
           Summary: Font not rending marks glyph properly
           Product: LibreOffice
           Version: 6.4.4.2 release
          Hardware: All
                OS: Windows (All)
            Status: UNCONFIRMED
          Severity: normal
          Priority: medium
         Component: Writer
          Assignee: libreoffice-bugs at lists.freedesktop.org
          Reporter: a.kalugin at live.com

Description:
I am developing a musical neume font. I have certain font marks get anchored to
glyphs.  While the woff font behaves correctly. The otf font in LibreWriter
behave correctly initially. It breaks as soon as I change the color of any mark
to glyph character. 

Steps to Reproduce:
1.Install the font from www.anisimkalugin.com/neume_font/kruki_kalashnikov.ttf
2.Open LibreOffice Writer and set the text Wáà change the font face to kruk
3. Select the á character. Its a bit difficult so you may need to switch to a
different font colorize it and then switch it back to kruk and you will see the
problem.

Actual Results:
The color change breaks the _shaper feature of the font faces.

Expected Results:
The color change shouldn't break the _shaper feature of the font face and
simply change the color of the mark. 


Reproducible: Always


User Profile Reset: No



Additional Info:
Version: 6.4.4.2 (x64)
Build ID: 3d775be2011f3886db32dfd395a6a6d1ca2630ff
CPU threads: 8; OS: Windows 6.1 Service Pack 1 Build 7601; UI render: GL; VCL:
win; 
Locale: en-US (en_US); UI-Language: en-US
Calc: CL

video demonstrating the issue: www.anisimkalugin.com/neume_font/font_issues.mp4
image demonstrating the issue:
http://www.anisimkalugin.com/neume_font/font_issues.jpg
font face to use: http://www.anisimkalugin.com/neume_font/kruki_kalashnikov.ttf

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