Your browser is either too old or it is Internet Explorer 8-11 with Compatibility View active. Compatibility View should not be active.
Disabling Compatibility View in Internet Explorer:
- Make sure that Tools | Compatibility View is not checked. If it is checked uncheck it:
If you don't see the menu, press Alt key.
- Although Tools | Compatibility View is not checked, it can still be active. Open Tools | Compatibility View settings:
If you don't see the menu, press Alt key.
- Uncheck Display intranet sites in Compatibility View.
- Close the Compatibility View Settings window and refresh the page (F5).