Thanks for reaching out, Randy Cook.
It sounds like you're having some icons go missing randomly. We can help.
First, let's see if we can confirm if this issue happens in safe mode: Start up your Mac in safe mode.
If the issue persists after that, try creating a new user and see if the new user account runs into the same issue.
While these steps might not solve the issue directly, there's a good chance they will help determine the cause, so that additional steps can focus on a resolution.
Hope that helps!
Take care.