My firefox version: 124.2.0 My phone: Xiaomi redmi note 13

The problem: This problem is most prominent when I want to listen to music on youtube while having another app open. I have "video background play fix" add-on. Interestingly, just going to the home screen keeps the song playing, but once I go to any other app (tested with discord, whatsapp and veryfitpro) the song stops playing. Then I go back to the app and it reloads the entire website and the song is at the beginning waiting for me to press play. I've tried different battery optimization strategies in the app's settings and none of them worked. Tried clearing the cache.