OCR and Korean Text

I’ve tried importing some scanned Korean text and then running OCR with mixed results.

The first page worked well, it straightened the text and I could copy and paste the Korean text fine, but for other pages, the image of the Korean text was flipped vertically in the final PDF+Text document, and of course the OCR text was gibberish.

Are there any preparation steps I can take with the images so that they get OCR’ed more reliably?

Hold the Option key and choose Help > Report bug to start a support ticket.
ZIP the PDF and attach it to the ticket.