I cannot get the following Nepali or Hindi word rendered correctly in PT8. PT7 had no problem. I have given the sequence of typing below that produces the word. It renders here correctly. If you type or copy and paste महत्त्व to PT8 text window, you will see it does not render correctly. No problem with Word and Notepad.
महत्त्व ( म ह त ् त ् व )