Hello,
I have calibre 3.36 on Fedora.
I am trying to convert a PDF file to read on the Kindle but, whatever output formats, I try, all spaces are lost making the text unreadable.
[edit]
Not posting an output file because I suspect it is subject to copyright (I did not upload the source file).
Conversion
https://pastebin.com/rXcZ1xDY
Would appreciate any hints as to how to fix this.