Created attachment 109712 [details]
Importing the attached PDF file creates the textboxes in wrong order.
The reading order is expected.
Created attachment 109713 [details]
Really strange - but...confirmed.
Ubuntu 14.10 x64
LibreOffice 184.108.40.206 release
1. Download "Import result"
2. Start pushing tab repetitively
Observed: You see that the text boxes that get selected are not in the order that you'd expect, they jump around the page.
Open this file in Adobe Reader, move text cursor to the start of the page and start pressing down arrow on keyboard: you will see the same strange jumps.
I doubt if we need to fix the problem, which is not fixed even by Adobe.
Still, various PDF-to-text tools works well.