Ionic 4 beta - is not working with livereload

I am trying ionic 4 beta, and i was using calendar plugin. Everything works fine, even in emulator. Since, i cannot run native plugins in brower I have to use emulator to debug but Ionic 4 app is not working while running it in emulator in debug mode. I tired livereload, l, cl none of them working. I dont see any error, just the app keep loading. But, if i run it without debug mode it works fine.