While the current path is active, you can see its outline in the document window. In Photoshop Elements, you can't hide it by using [Ctrl+H] shortcut (fig. 1).
Furthermore, in some cases PSE doesn't allow you to use the Shape tools (fig. 2).
To fix the problem, you have to deactivate the path as follows:
- Open the "Paths" dialog.
- Apply the "Deselect Path" command.
On the screenshot 1, the author deselects path of the current shape layer's vector mask.