>Libreoffice completely scrambles all the elements on each page
Oh yes, I know your pain well! I was doing an online German test - it was under strict time conditions, only had 10 or 15 minutes. To my horror, I downloaded the file and well, Libreoffice scrambled everything. The text made references to pictures that had been accidentally covered up by text boxes, things were all a bit out of order, had to rearrange and reinterpret half of it on top of doing the test itself. There were lines I was supposed to write on, but writing on those lines caused everything else to shift out of place again. I don't think I did myself justice on the test, but I comfortably passed the module - all's well that ends well.