iPhone iBooks app not showing PDF covers

[iMore Question]

Hello I have an iphone 8 and trasnfered some purchased pdf's from my PC to my App, unfortunately when accessing the ibooks app through my phone the thumbnails rather than showing the books actual cover instead just show a general solid color with white text showing the pdf's name. This didn't used to be the case as my older iphone didn't have this issue.

 

[Annie_M]

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For what it's worth, I just looked on my iPhone (12 Pro), and initially, I saw the general solid color with white text that you described, but then the cover showed up. I realize that is not much help to you.

I do recall reading that there is a bug where this happens. I found this article: (https://desktopofsamuel.com/fixing-ios-books-cover-problem-with-custom-epub/), that offers a workaround of sorts. Hopefully, someone else will come along with a possible solution.