Text selection is really really bad, on most documents (even on well structured digital documents). I cannot describe how frustrating it is to use in the day to day.

Best workaround is to screenshot documents and use the text recognition of the snipping tool (on windows), that while not always perfect, is miles ahead of the text selection on Adobe Acrobat.

Adobe cannot not know that issue at this point, after all those years developing and maintaining acrobat and still this bad in inconceivable. Hope to see an improvement on that part one day!