Lockscreen controls for music player apps not showing up on Honor 5X.

[AC Question]

Hello, I've tried to enable and use lockscreen controls for my favorite music apps (Poweramp) but whenever I play music they don't show up. I've updated my 5X to Marshmallow and EMUI 4.0 and only the default music app seems to work on the lockscreen. I've tried many different apps, enabling lockscreen in each app permission, enabling and disabling banners, enabling settings in each music app and nothing seems to work. The stock music player is decent and usable but is definitely lacking some features I liked (comprehensive equalizer, better playlist organization, etc.). Is there any way to fix this?