After rotation, text is not extracted

[eikek]

Original: eikek/docspell#554 (comment)

I did few more tests and here are the results:

1. First I uploaded original document (jpg file with incorrect rotation) - OCR couldn't recognize the text properly
2. I used the rotate addon - the converted PDF got rotated, but the extracted text didn't change
3. Also, I made a copy of the jpg file, rotated it with Windows Photos app (then, to ensure, I checked with paint - it was rotated properly) and uploaded. The result was having the "original" jpg file rotated properly, but the converted PDF is rotated incorrectly (as it was originally in point 1).
4. However, when I took the properly-rotated jpg file from point 3, opened in paint, added a single dot anywhere and uploaded - then both the original file and converted PDF were rotated properly (rotation wasn't changed as it happened in point 3) and OCR properly recognized the text.