Conjuncts in Devanagari fonts are broken when language is set to 'Marathi'

Conjuncts and lookups of several letters in many of the Devanagari fonts are broken when the fonts are being used with language 'Marathi' selected. Although, everything works fine when language is 'Hindi' or none.

Fonts like Mukta, Eczar, Glegoo, Baloo 2, Noto Sans work flawlessly. They don't have this issue. On the other hand, fonts like Martel Sans, Martel Serif, Cambay, Jaldi, Kadwa, Vesper Libre, Yatra One have this issue. This is a problematic defect considering quality perspective.

Some other Devanagari fonts may have this issue, unfortunately, I have not checked all of them.

Some samples of defect :


Is it an issue related to font sources or font production software ? Or is it not implemented fully in these fonts ?