I'm having this same problem. Drivers are installed according to Software Update page but are missing under Management.
After a myServer update, clear the Cache in your browser. Easiest way is to right click on the webpage (like Dashboard). Then click Inspect. A window will pop open. At the original Dashboard webpage, click and HOLD the browser refresh button. Slide down and click the Clear Cache and Reload button.
You should then see the latest and greatest.
As the software gets updates, many times the Javascript also gets updated. Clearing Cache forces the browser to grab the latest (and not use the old stuff that is in the browser's cache). Using cache is really helpful to speed up page loads so all that "stuff" doesn't have to be network dragged in with each page load. so pages load much faster.
