Stone on pedestal dissapears after game load

[mztulip]

Describe the bug
When stone is placed on pedestal it is visible. After loading game it dissapears.
It never shows again.

Save-game/Log-file/Screenshots/Video

pedestal.zip

[Try]

Hi, and thanks for raising it!

I was sort of aware of it, and seen in several playthrough's, but never really have had to fix it :)
Here engine just missing part of save/load code