Skipping song changes volume instead

I have a US Cellular G3 and I play a lot of music. The most annoying problem I've come across is that when I hit the skip button, it just raises the volume, as if I had just hit the volume up button. And the skip back button lowers the volume. I've been using Rocket Player but I noticed this morning that it does is to the stock music app too. I've looked all over online and I haven't seen this problem pop up anywhere, so has anyone come across this problem and is there a fix for it?
Thank you kindly!

Edit: I forgot to mention that it only happens in the lock screen controls, or on bluetooth. In app works fine.