When converting a PDF to a PowerPoint file, Acrobat automatically attempts to convert individual slide elements such as text into editable content.

This is useful for many users, but that makes PDF a far less useful intermediate filetype for locking and preserving PowerPoint formatting than it should otherwise be. In an ideal world, one would be able to turn off that feature and create a PowerPoint file where each individual slide is a static image— leaving zero opportunity for a missing font or any other weird issues to appear whatsoever.