Patch: the sound button now always turns sound back on
⚠ Warning (fixed): in the first public alpha, changing several sound settings could leave the game silent with no obvious way back.
What went wrong, found by reproducing it: (1) if a timed mute from Quiet time was running, the sound button did nothing useful, because the quiet timer kept the sound off; (2) if the effects and music sliders had both been left at zero, pressing the sound button reported sound as on but nothing could be heard; (3) the button changed the main volume but did not tell the soundtrack player, so music could stay silent.
What changed: the sound button now ends a timed mute, puts zeroed effects and music sliders back to their defaults, updates the soundtrack player as well, and wakes the audio engine if the browser had put it to sleep. A regression test now covers the first two cases.
Not yet checked: it was tested in a desktop browser only, not on a real phone, and nobody has re-listened to it by ear. If you still get stuck without sound, please use the red megaphone to tell us what you changed. Thank you to the player who reported it.