Writer making a hash of Hindi?

I’ve just upgraded to Windows 10, after a format and clean reinstall of Windows 7 64 Pro. On Windows 7, I used MSO 2010 a lot, but had LibreOffice 4.x as well. I didn’t install MSO on my new Windows 10 setup. only LibreOffice I was VERY disappointed to discover that it makes a complete mess of displaying docx files in Hindi created in MSO 2010
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contrast that with the same file opened in Quip image description

and Google Docs
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It’s exactly the same file, no modifications at all, so the issue clearly lies with LIbreOffice. Is there a way I can fix this so as to be able to use LibreOffice, as I’d wish to?