After a clean install of macOS Sierra, I found that one app's name is missing in the Launchpad. The app is the statistical software R. The icon of the app appear in launchpad but there is no app name "R" under the icon. All other apps have the app name underneath but just this one is missing. If I changed the name of this app in the application folder to something else, it shows up in launchpad. If I rename other app to "R", the name will disappear in the launchpad. I am wondering if the name "R" is something special that it does not show up. I did not have this problem in El Capitan. Anyone else has experienced this or know why?