ONLY post epub here if you are 100% sure its not copyright protected, otherwise post it at ==>>
Bugs : calibre and with a link back to this thread and mark it private.
If you can select text with evince then I think it's a peculiarity with acrobat for android. Try another android reader, like Google's or Foxit, if they can select text then it is acrobat specific. If they can't then - hmmm.
I doubt it would be the metadata, but if you think it is, then strip content.opf <metadata> block back to the bare bones DC elements with the calibre editor and try converting again.
BR