This is strange indeed. I can confirm I encountered the bug two times in a row. I restarted the level, I did the same actions and Oops kept telling me "There's something I forgot". Stuck. I clicked on Morglot thousands of times, actually I clicked on everything 1.000 times!
:-DDDD
Maybe you're right and it's not related to the order of the actions, so I wonder if there's something I did that stalled the game. Who knows? I'm sorry I can't help you more with this. Maybe it's not that frequent, if I was the only one in this situation.
By the way, I've beaten the game and it's been a VERY funny experience. I'll post a complete feedback somewhere in the near future. Keep up the good (wonderful) work, Pierre! :-)