Apostrophes and Quotation marks are not selectable.

I'm reading a PDF in Adobe Acrobat. I'm trying to highlight sections of text. I can select normal text, but if there is an apostrophe or quotation mark within the string of text I am trying to select, Adobe refuses to select the word with the apostrophe or the word next to the quotation mark. For example, if there is a sentence "Spot ran fast" Adobe will select all the words with no issues. But if the sentence reads "Spot's run was fast" Adobe refuses to select the word "Spot's" because it has an apostrophe within it. Similarly, if there is a sentence "Spot liked the 'Best dog' brand of dog bed" Adobe refuses to select the words 'best dog' because they have quotation marks next to them. 

How do I fix this? I have checked the document's Security Properties and Document Assembly and Page Extraction are not allowed, but Content Copying, Commenting, Filling of form fields, and Signing are.