On Minecraft Bedrock Edition version 1.16 on my OnePlus 7 Pro, I've observed an audio delay between when an action occurs and its associated sound plays. Attached below is a quick video demonstrating this in the menu, although it occurs all throughout the game, including during game play (for example, when landing after jumping, closing doors, etc.) It's slight, but certainly noticeable.

I've also observed this issue in older versions of the game; if I'm not mistaken, on my old OnePlus 5 running Android 9, in version 1.14 of the game, a similar issue occurred.