Okay, let's make sure I've got all the info first. Player id Martin Green#79810, platform Android, system version 14. I'm using a Pixel Fold. However, I've had this issue on the Pixel 6 Pro and across multiple versions of Android in the past, as well!
So, the issue is that when I help out a guildie by dusting their shop, if I skip past the animation of the bar filling, then I get an audio bug. The little "dingalingalingalingalingaling" noise of the bar filling will play on repeat, unstopped, after I leave that screen.
What's odd is that inducing that effect--helping out a visiting Hero with an item request, feeding a pet so their XP bar fills, etc--will stop the bug. But it will keep going until I reset the game otherwise.
Dunno if it's a solved issue or a known one, but it's a minor inconvenience that's been around for awhile, and I only just started posting in here so I figured I'd post about something I'd noticed!