When I introduce changes into .html files placed somewhere under /app folder, right after the save operation the changes are reflected in the browser, live reload works fine. But when I introduce changes to the src/index.html file, the change is reflected in the browser only after saving another (second) change. So live reload is one step behind on changes in the src/index.html file.
I thought changing line 36 in gulp/watch.js from:

    gulp.watch(path.join(conf.paths.src, '/app/**/*.html'), function(event) {

to:

    gulp.watch(path.join(conf.paths.src, '/**/*.html'), function(event) {

would help, but it didn't change the behavior.