Even with the fix for
QTBUG-83358, it still needs improvement when rendering Hindi glyphs.
We still see the outline thickness is uneven and the strokes overlapped are not smooth compared to the result with our proposed patch https://codereview.qt-project.org/c/qt/qtdeclarative/+/216485. You can see the screenshot in this comment.
Main problem seems to be that outline shader and fill shaders are not matching exactly