Approximately a couple thousand. It happens for Telugu, Devanagari, and Bengali, for pretty much any (C,C,V) choice in Telugu, for any (C,C,V) choice in Devana

Approximately a couple thousand. It happens for Telugu, Devanagari, and Bengali, for pretty much any (C,C,V) choice in Telugu, for any (C,C,V) choice in Devanagari where the second consonant is 'ra', and any such choice in Telugu where the second consonant is 'ra' or 'ya'. Some vowels don't work. <consonant, virama, consonant> usually forms a ligature in most indic scripts. usually, that ligature is formed by munging the first consonant and tacking it on to the second. However, in Telugu, it works the other way around -- the first consonant stays the same, but the second consonant is munged and placed below it. As a result, many forms render <virama, consonant> as a sort of "composite combining character", with a placeholder for where the first consonant goes, and the second consonant below it. In Devanagari, the 'ra' consonant also does this, and 'ra' and 'ya' in Telugu. This also happens for all Kannada consonants, but I can't trigger the bug with Kannada. ZWNJ isn't really specified for Devanagari or Telugu; it can both make the vowel render separately or do nothing. In Bengali for some vowels it changes their form; however this bug occurs for more than just those vowels.