Facebook not mute even though system sound is - since the dawn of time.
More specifically, since I own an Android (... 5, 8... since forever let's say), I've pissfully noticed that even if you mute your Android system sound, you still have, at full volume seemingly, the :
Facebook "Like"/react sounds.
I've had this on all devices, currently an Android 13 Vivo.
I think we need to get to the bottom of this and expose whatever shadowy shizzle is happening here.
I found this helpful post that indicates in a for sure manner that FB does have shady partnerships with certain vendors : https://www.reddit.com/r/Android/s/r6nET1vcoW
Have you noticed this on stock rom (=Pixels)?
It always felt to me that FB has had shadowy priviliges in the Android eco-system and it's still the case in 2026, even when the two companies are competing for the AI space.