Reply To: How to tag people in a post so that they receive an email notification
However, the auto mentions only work from the text tab (not the visual), is this a bug?
i think the functionality to make the script work for the TinyMCE visual editor is not possible now. You see that we are basically just borrowing the script from BuddyPress to work for bbPress forums , and also that neither bbPress and BuddyPress have the visual editor in their default installations without some plugins or functions added.
It is possible to make it work for TInyMCE though, you would probably have to use some of the code of this auto-complete plugin for TinyMCE.
https://github.com/abrimo/TinyMCE-Autocomplete-Plugin
If you want to develop some custom functionality to make it work for your client ,only thing i can suggest is look over how this plugin is developed and see how they make it work for TinyMCE and of course add on to the script from the BuddyPress plugin.
wordpress.org/plugins/mentionable/
Other than that maybe decide to disable the visual editor for bbPress to make it work fine.
Also, it seems that some users get a notification, but some are not.
If you are talking about the notifications users get when @mentioned , then go to the BuddyPress Support forums for help on this.