Text Finder - Bounds for vertical text seems to be incorrect

[windsurfer_ua]

Hello, I'm using Spire.PDF ver 10.7.21 for C#.
For search text I'm using the following code fragment:

PdfTextFinder finder = new PdfTextFinder(page);
finder.Options.Parameter = TextFindParameter.WholeWord;
List<PdfTextFragment> finds = finder.Find(word);

foreach (PdfTextFragment fragment in finds)
{
fragment.HighLight(Color.Green)
}

For the vertical text - Bound of founded fragments 0 Width.
As the result code fragment.HighLight(Color.Green) works incorrectly.

[Amin.Gan]

Hello,

Thanks for your inquiry. I simulated a PDF document with vertical text content and tested it using the following code, and the results showed that everything was normal. In order to help us reproduce your problem, please provide us with your input PDF document for investigation. You can upload here or send it to us via email（ support@e-iceblue.com ). Thank you in advance.

Sincerely,
Amin
E-iceblue support team