I've just finished re-playing Space Quest 6 a couple days ago, I was playing the v1.0 English version, it's been more than 16 years since the last time I played it so it was a real blast to be able to play it once more.
But when Roger is in Stellar's stomach, I encountered two bugs of the game (spoiler allert):
If I forgot to pull the pill and drop it to Stellar's esophagus before tickling her throat, then there's no way to undo it. Roger will no longer be able to do anything to the pill afterwards, I had to restart playing the game because of this. If I get the gall bladder first before the pancreatic fluid, then Roger will not be able to get the gallstone. Again, I had to restart the game. I should have used two save games instead of just one, got to learn it the painful way.
I hope this will help anyone who's going to play the SQ 6, or for those who is currently playing the game and got stuck because of those two bugs.
I wonder if this also happen in the other SQ 6 versions?