The PlayStation 4 version of Final Fantasy 10/10-2 Remaster has been patched.
According to the announcement, the Random Number Generation that "ensures that monster encounters and the abilities they use happen randomly" has been corrected.
Also, Square has fixed an issue where the music would "restart from the beginning after a random encounter." Now the music will play through the entire encounter.
The patch will be applied the next time you fire the game up.