Last time I tried it, it didn't handle unicode very well. It was a year ago and, when I saved the documents, things like "à" would turn to Chinese characters. Apart from this, I liked it a lot. Now I just use VIM and pandoc for PDFs.
Thank you for this, I've been long wishing for a NValt clone with an inline Markdown preview. Currently I write longer notes in Sublime Text,now Typora seems a nicer alternative.