Thank you @digitall. I just filed a bug report as described. I consider this forum entry as closed.

https://bugs.scummvm.org/ticket/10957

Hello, I'm writing here before raising an official ticket to be sure I'm doing things properly. Bug details : to progress the game at some point you must visit the psychiatrist (aka Psychiatrickerist) for him to provide some ink blot papers. Yet whatever I do I'm never called up to his office. After...