You shouldn’t have ‘E-mail’, ‘Forums’ or either instance of ‘Welcome to bbPress’ on the ‘Dashboard’ menu.
What plugins are you using?
I expect it to be a conflict with one of them and/or the menu plugin you are using is picking up things it should not be.
I know, I put e-mail and forums myself for easy access for my Contributors. I was using the Admin Menu Editor plug-in – https://wordpress.org/plugins/admin-menu-editor/
I decided to de-activate and delete it. That did fix the problem.
