The problem is that the vowel ` ि` is in a misleading position in the decomposed form. It implies a spelling of kshatrayi instead of kshatriya, unless you happen to know that Unicode requires it to be there and the font engine is supposed to move it to its correct place in the ligature.

(This comment is a good equivalent of the problem in English. https://news.ycombinator.com/item?id=19575942 )