dots under apps not appearing
In the past week or so the dots under the app in the task bar (iMac) showing the app is open have stopped appearing. The apps work fine but I cannot instantly see which apps are still open
iMac, macOS Sierra (10.12.6)
Go to: Apple > System Preferences > Dock and look to see if "Show indicators for open application" is checked.
If it is, try un-checking and re-checking it.