ClassStub now links to the file using the editor scheme. However, there are a few small bugs:

• When FQCN are cut using the ellipsis character, only the last bit is clickable. E.g. in "Symfo…\FormType" only \FormType is clickable.
• The cursor is always set to pointer, even when no editor URI was configured (and no link rendered)
• The first bit (Symfo…) has the FQCN as title, while the second bit \FormType has the number of characters as title

A personal preference, I would not break FQCN within namespace names.
I would prefer "Symfony\…\FormType" over the current Symfo…\FormType