Soundcore Liberty air 2 pro (Sound muffle problem after an incoming call)

Hey how you all are doing, actually I’m using soundcore Liberty air 2 pro, whenever I listen to the music at the highest volume and an incoming call takes place while the music is playing after receiving the call via buds and ending the call makes the sound muffled and I’ve to use either volume up or down to make the sound to be normal and while I’m on call if I reduce or increase the volume, it takes approx 1-3 seconds to get the sound adjusted bt it only happens while I’m on call, haven’t faced any issue while listening to the music ! Is this with everyone or should I get it replaced ? I use OnePlus 8.
Your reply will be highly appreciated sir