Thank you for playing and for your comment !
When you use the white ball (it is supposed to be a button lol) before stealing the scarab, indeed you get a Game Over, that’s because it means the player didn’t complete the level before returning to the present.
About the bugs, I didn’t manage to reproduce them, but I am not surprised there might be some hiding, I hope they didn’t cause you too much troubles ^^
In the pyramids there are 2 items to pick : the invisibility pill (in the hidden corridor) and a vulnerary that heals 5 HP (you can find it in the pots)