Did you make a selection from the path by right clicking in the path and choosing make selection or doing the selection from the paths panel?
Did you have any other selections active or choose something other than new selection?
What version of photoshop and operating system?
I tried to make the selection every way:
- by right clicking in the path and make selection,
- by right clicking on the path on the path panel and make selection,
- by clicking on the path on the path panel while holding ctrl key…
… and the result is the same all the time.
I didn't have any other selection.
I use PS CS5 version 12.0.4 × 32, my operating system is Win 7 Enterprise SP1
I never experienced anything ilke this before. I restarted the system and tried it again, but it's the same.
What's your layer structure look like? Is there a layer in the stack - for example a black background mask - that ends vertically right there?