Not technically correct; <consonant, virama, consonant, zwnj, vowel> is not a sequence you'd see in actual Telugu text (zwnj doesn't do anything for telugu).

However, there are similar test cases for Bengali, and ZWNJ does have an effect on some Bengali vowels, so it's definitely a real world character in that case.

Is it a common character? e.g is this more like “the word ‘hello’ crashes safari” or “the word ‘syzygy’ crashes safari”?