sparkl3s For the sake of being thorough, please test a new save in a clean user folder. Move the entire Sims 4 folder out of Documents > Electronic Arts and onto your desktop. When you launch the game, a clean folder will spawn with no content. (Your saves and other content will be intact in the folder you've moved but temporarily unread by the game.) Don't add anything to the new folder yet; just start a new save and test the apothecary rack.
When you're done, you can delete the new Sims 4 folder and restore the old one, and your user data will be intact again. But if the rack works in the new folder, I'd suggest instead copying your saves and Tray files to that folder and discarding the old one.
If the problem exists in the new save in the clean user folder, please provide a dxdiag. Click Windows key-R, enter dxdiag in the run box, wait for the scan to finish, click "Save all information," and save the file to your desktop. From there, you can attach it to a reply using the paper clip (Attachment) icon included with the other formatting buttons.