Adobe Reader has a bug when it comes to pdf files that get updated. I create pdf slides using latex+beamer. After recompiling to make a new pdf, sometimes adobe reader does not like displaying the updates. I close the tab for that file and reopen the file only to see that the old version without the updates. Sometimes the file also then displays some pages as entirely blank from the point where the changes were made onward (or so I am guessing). Quitting Adobe Reader DC, reopening Adobe Reader DC and then reopening the file works to then show the pdf file properly. I am uncertain if the frequency of the problem is dependent upon the types of changes to the file being made; sometimes it seems like the problem occurs roughly 1/5th of the time after compilation; sometimes much less frequently.

I am using mac OS X v11.4 on a macbook pro. I have the most up to date version of Adobe Reader DC installed. This problem has been happening for several months.