ok latest bug.. replicated many times.. sound disappears after 20 min or so.. i checked sound is on and working.. (course i cant test another tab in your 'browser'). made sure system sound is fine.. but poof.. sound is gone.. (made sure it wasnt muted or turned down in game.. it just goes for ding ding... then 20 min later nada). reloading fixes but that takes soo long.
correction - i timed it today.. sound lasts 6 minutes.. then nothing. i have reloaded.. and them marked the time while collecting collies.. and at 6 min they stopped any noises. nor did dusting make a jingle etc.. frustrating.. as i cant hear for intercepts or explorers.