Not by relative standards. You always run into things to troubleshoot upon any opening. That's why we have Windows 7, 8, 9, 10, 11. That's why the car companies issue recalls. That's why we are up to iPhone 6.
You've got to fix bugs that you did not anticipate. Nobody's perfect. You don't want to linger on a game plan too long or you'll lose the game to your competition.