I'm playing QfG 3 (GOG version) in ScummVM and happened across a bug which makes it never get dark at night. The night time events still seem to happen (the thief appears in the bazaar in Tarna) but visually it never gets dark. It doesn't seem to affect gameplay but it's distracting.

I found only 2 people mentioning this bug. Bunyip's comment on CRPG Addict's blog: https://crpgaddict.blogspot.com/2018/04/game-285-quest-for-glory-iii-wages-of.html and the OP in this thread: http://forums.scummvm.org/viewtopic.php?p=80190 )

Has anyone else had this bug? The other two people experiencing this bug were also playing in ScummVM. Any idea on how to prevent it from occurring in ScummVM (if possible)? Or should I just restart the game in Dosbox?

This bug doesn't seem to affect gameplay but it's really jarring for me.

That sounds vaguely familiar, and I think it may well have been fixed already. If you want, you can try a daily build from the ScummVM website, and see if it's been fixed. If not, file a bug report on their bug tracker, and they'll look into it.

I went through my old saves and did some experimenting. If I wish the liontaur guy good night on day 4 when we're both in the guest hut in the Simbani village (after which I automatically go to sleep), the bug shows up on day 5. If I don't speak to the liontaur and instead go out exploring in the night on day 4, it gets dark as normal on both day 4 and day 5.

I didn't have time to test it further at the moment, will do so later. I'll also try the daily ScummVM build later.

I restarted the game in ScummVM (didn't try the daily build, changed nothing in my configuration) and didn't get this bug anymore. I'm now somewhere between day 10 and day 20 and it hasn't showed up in my new game.