Devanagari characters $1CD0, $1CD1, $1CD2 behave erratically w.r.t mark positioning

[advaita56]

1. Bug3 in OPENTYPE Devanagari scripts “dev” or “dev2”
2. Using Microsoft Word 2016, 2019, Office 365 on Windows 7 and Windows 10
3. But Renders fine Using Microsoft Word 2010 on Windows 7 and Windows 10
4. Font Sanskrit2020.otf https://sourceforge.net/projects/advaita-sharada-font/files/Devanagari/
5. Devanagari Unicode Block $0900 to $097F
6. Vedic Extensions Unicode Block $1CD0 to $1CFF
   a) glyphs $1CD0, $1CD1, $1CD2 cannot be anchored or precisely positioned for numerals using GPOS / GSUB.
   b) The geometric shape $25CC keeps getting displayed.
7. Whereas for glyphs $0900 to $0939 these can be accurately positioned and the geometric shape $25CC is never in the way.
   bug3 in OpenType Devanagari script.docx
   
   bug3 in OpenType Devanagari script.pdf