Everything -- including OCR, which for me did not work at all previously. Not it is perfect! (used it on German documents). 2.5.201 on a 64-bit Ubuntu does not have the display problems reported previously, even with synchronous mode *dis*abled. I previously used 2.5.200 on a 32-bit system, where OCR would not work, and there were frequent display problems (white horizontal stripes).
What does not
What was not tested
I tested all the functions - viewing, commenting, OCR, printing, saving.
|Operating system||Test date||Wine version||Installs?||Runs?||Used|
|Show||Ubuntu 20.04||Jun 10 2021||6.0.1||Yes||Yes||No||Silver||Numerfolt|
|Show||Linux Mint 17 "Qiana" x86_64||Apr 29 2015||1.7.41||N/A||Yes||Bronze||an anonymous user|
|Show||Fedora 20 x86_64||Sep 11 2014||1.7.26||Yes||Yes||Silver||an anonymous user|
|Show||Ubuntu 14.04 "Trusty" i386 (+ variants like Kubuntu)||Jun 17 2014||1.7.19||Yes||Yes||Bronze||an anonymous user|
|Show||Linux Mint 15 "Olivia" x86_64||May 05 2014||1.7.17||Yes||Yes||Bronze||an anonymous user|