Also here, just finished organizing all my things (my house is now a... factory esque room due to Cabinet making XD) and when I was going to pick that very special Faded Heart my own sort of sank... I can't make any action with it!
You can't drop your Faded Heart, or put it directly into a cabinet (you can do that if you put it in a bag though). It's been around since the Faded Heart was first *imagined*.