#+OPTIONS: toc:nil is ignored.

[UwUnyaa]

Looking at code of this library, toc in options is expected to be a number, which is the level to which table of contents should be displayed. Hoverer, a value of nil is silently ignored, even though the org-mode manual lists toc:nil as a way to suppress displaying the table of contents. This breaks many org-mode documents, as official way to disable ToCs is ignored by this library.