Yes, the problem seems to happen mostly on a couple of holes of St Andrews and all of Bandon par 3. I play on an Android phone (Samsung Galaxy S8), and I've found that if I completely close the app (not just hit the home button), and restart it, when it comes back up (it will ask if you want to resume the game), the flag will be there again. However, this only lasts for that one hole. I was playing a bracket tournament, and the third round was Bandon. I was too deep into it to chance poor shots because of a missing pin, so I restarted the game 18 times. Hopefully this one gets fixed soon.