LibreOffice v7.0.3.1 Impress: drag and drop PDF not working

Hi! I am having a problem with dragging PDF images onto my Impress document. This is important for me to be able to do because it’s the only way I know of to import multiple pictures at once. Sometimes it works as expected while other times it does nothing, and other times it has weird behavior like duplicating the slide I drag onto. Sometimes after a fresh restart of my computer it works and sometimes it doesn’t so I don’t know where to start looking for what might be causing it. Any ideas?

OS: Manjaro Linux v20.2 with Gnome