https://bugs.documentfoundation.org/show_bug.cgi?id=150912

            Bug ID: 150912
           Summary: Italic and bold graphic glitch with Noto fonts on Arch
                    Linux KDE Plasma when scrolling or editing text
           Product: LibreOffice
           Version: 7.4.0.3 release
          Hardware: All
                OS: Linux (All)
            Status: UNCONFIRMED
          Severity: minor
          Priority: medium
         Component: Writer
          Assignee: [email protected]
          Reporter: [email protected]

Description:
In a brand new document, with a paragraph of text in Noto font, the bold and
italic aspect of a word is not consistently maintained when scrolling or
editing the line with a bold word. Please see attached screencast for
illustration.



Steps to Reproduce:
In a new writer document with a paragraph of text
1. Set font to "Noto Sans" (or any other Noto font)
2. Select a word in the text
3. Toggle bold and/or italic for that word
4. Scroll the word off the screen, then back again.
5. Place a space after the word and remove it.

Actual Results:
The bold and/or italic "disappears" then reappears" as one scrolls it in and
out of view, or places and then removes the space after it.

Expected Results:
Bold and/or italic should just stay as they are.


Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info:
This does not happen with Liberation fonts, for instance. Haven't tested any
more exhaustively to see which fonts do, which fonts don't...

OpenGL information:

OpenGL vendor string: Intel
OpenGL renderer string: Mesa Intel(R) UHD Graphics 620 (KBL GT2)
OpenGL core profile version string: 4.6 (Core Profile) Mesa 22.1.7
OpenGL core profile shading language version string: 4.60
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 4.6 (Compatibility Profile) Mesa 22.1.7
OpenGL shading language version string: 4.60
OpenGL context flags: (none)
OpenGL profile mask: compatibility profile
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.2 Mesa 22.1.7
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.20
OpenGL ES profile extensions:

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