Plugin slug with slash works on edit page, but not on preview

Hi there,

I love the plugin and have been using it for years now.

Just a thing I noticed, I accidentally pasted the plugin slug with the forward slash when editing in Gutenberg, and the preview works even if the slug is:

– /open-links-in-new-tab/
– /open-links-in-new-tab

But on the live page when previewed or published it shows: Item not found:“/open-links-in-new-tab”does not exist.

It would be useful to show that it is not going to work right in the edit page, or make it work like it does while editing.