Tagged PDFs exported from InDesign drop spaces between words. This occurs in the content at the end of lines, most often in List Items, but also in paragraphs. It occurs nearly all the time in lists, causing screen readers to mispronounce the run-together words unless they are separated by punctuation or the 2nd word has an initial cap.

This has been a problem for quite a while. Very time consuming to fix -- by adding space manually in Acrobat DC or adding actual text.

Working on proprietary material here, cannot forward example files and I do not create the native files . File created on Indesign for Mac, remediation of PDF on Windows 10. Calibri font in this instance.