SAGA: IHNM (Ellen) Ellen disappears when trying to exit after front door is closed

[Thunderforge]

In Ellen's section, after activating the chaos trebler and closing the front door, Ellen can walk to the front door and disappears.

Reproduction Steps

1. Load the attached save game
2. Click to the exit on the left

Ellen will disappear behind an overlay. If you click somewhere else, she will emerge from it.

​This walkthrough describes this bug, although with a different result that I couldn't reproduce.

Bug: After activating the Chaos Trebler, the front entrance to the pyramid is sealed. However, if Ellen goes to the fountain room, leaves, then returns, she can simply walk through the closed pyramid door and go outside. However, there's nothing out there to do.

Tested on

• I Have No Mouth and I Must Scream ​GOG release
• ScummVM 2.9.1