Vowel below forms ೃ (u+0cc3) and ೄ (u+0cc4) of ಋ (u+0c8b) and ೠ (u+0ce0). These two vowel diacritics sit outside all consonant conjugates. Both "Kannada Sangam MN" and "Kannada MN" have wrong form. Please visit this below link for demonstration. http://kannadafont.blogspot.com/2017/10/case7-vowel-form-ru-and-ruu-wrong.html
Test pages: for vowel below forms ೃ (u+0cc3) http://kannadafont.blogspot.com/2017/10/case7-vowel-form-ru-and-ruu-wrong.html for vowel below forms ೄ (u+0cc4) http://kannadafont.blogspot.com/2017/10/case7b-vowel-below-forms-u0cc4.html
<rdar://problem/34796060>
This is a CT issue, duped to 34761829.