The progress bar that comes up when exporting a pdf, I have noticed that if you are exporting a pdf that has more than 100 words, the progress bar fills up to 100 pages only and then is full while continuing to export the rest of the pages.

This is most likely because in the code, it is specified that the progress bar reflects the number of pages exported, all the way to 100 pages, instead of the progress bar reflecting the percentage of total pages that have been exported.