When I run this command I see no mention of CakePHP in the resulting tooltip. Reinstalling the bundle doesn't seem to make a difference.
In the Bundle Editor, when you select a snippet, the field Scope Selector contains the scope in which the snippet will be usable. In your document, when you type ⌃⇧P, the tooltip shows the current scope (i.e. behind the caret). If the current scope is not englobed by the scope of the snippet, the snippet will not be active there.