When purchasing inscribed notes from the Scrivener NPC the placeable does not show the text when dropped, just 'note'.
Did you leave the area then transition back in and check? Boards/notes don't always update right away when you drop them. You need to leave the area then transition back in and often they will have the desired text.
From the ten notes I had inscribed the two that were purchased from the Scrivener did not show text after being dropped. I did not know about the transition fix so I'll have to check again.