I can confirm that this is still an issue in Co-Op mode on PlayStation 4 as of 11/11/2019.
Steps to reproduce:
1. Using a PS4 account that has not unlocked the Scoped trophy, launch Battlefront 2
2. At the Main Menu, select Co-Op
3. At the Character Select Screen, select to play as a Specialist and press the X button
4. At the Character Select Screen, press the Square button to access the Star Card Screen
5. At the Star Card Screen, select the Marksman Star Card and press the X button
6. Press the Circle button to return to the Character Select Screen
NOTE: Steps 4 through 6 are optional, and may or may not be necessary to reproduce the issue. However, they will make it easier for the tester to determine whether they have defeated an enemy with a headshot from a longblaster rifle.
7. At the Character Select Screen, press the R2 button to access the Weapon Select Screen
8. At the Weapon Select Screen, make sure that the Specialist character is equipped with a longblaster rifle (The NT-242 is preferable because of its high damage)
9. When Co-op gameplay begins, defeat 25 enemies with headshots (The Marksman Star Card will help the tester to determine whether they have defeated an enemy via headshot)
EXPECTED: The Scoped trophy should unlock after the player defeats 25 enemies with headshots while playing as the Specialist character and using a longblaster rifle.
ACTUAL RESULT: The Scoped trophy does not unlock after the player defeats 25 enemies with headshots while playing as the Specialist character and using a longblaster rifle.
