Steps to reproduce:

1. Create few items, i.e. vfs.fs.size[/,pused] and vfs.fs.size[/,pfree] and vfs.fs.size[/,total]
2. Create graph with supported macro in the name, i.e. Disk space usage in %, Total size: {{HOST.HOST}:vfs.fs.size[/,total].last()}
3. Create new Widget on Dashboard with type Classic graph and use previously created graph in it.

Result:
The name in the graph isn't being resolved. Please see the attached screenshot:

Expected:
Expected to either resolve the macro to correct value or warn the user that currently that functionality isn't supported.