Help in Okular: problems when highlighting vertical lines (Japanese writing)

I have a scan of a file in Japanese, and the text is in vertical lines. However, when I try to highlight using Okular, it treats the lines as horizontal. I am fairly certain that the problem is not with the OCR, as other PDF software properly treats the lines as vertical. Am I missing some configuration in Okular or is it a bug?

Welcome to the forum!

That looks like a bug, you should make a bug report: Components for okular

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For what it’s worth - based on the bugs that have been marked as duplicates of it, the following KDE Bugtracking System issue might cover, or be connected to, this topic: 407133 – Copy text from rotated pdf gives rubbish

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Yeah, you are right, that bug should be the same. However, it doesn’t look like anyone had mentioned it in the context of japanese writing.

Thank you for the support and orientation!
I have submitted the bug report under Bug 50545.