Root Page Not Found When Using Page Tree Macro

Summary

When using the Page Tree Macro to display a Page Tree from another Space generates the following error:

The root page SPACEKEY:Page Title could not be found in space "Space Title". 

Environment

• 6.0.0-OD-2016.06

Steps to Reproduce

1. Create a New Page and Add the "Page Tree" Macro
2. Specify a Root Page from another Space; field updates to SPACEKEY:Page Title
3. Specify the "Restrict to this Space Key" to the External Space
4. Save Macro
   

Expected Results

Macro shows Page Tree of pages in the specified space

Actual Results

Page shows

The root page SPACEKEY:Page Title could not be found in space "Space Title" 

Notes

Not Specifying a Space Key in "Restrict to this Space Key" shows the current Space's Space Key rather than the External

Workaround

Remove the "SPACEKEY:" from the Root Page field

Option 2:
If trying to display the pages of a Space, do not specify a Root Page, only set the "Restrict to this Space Key" to the Space's SPACE KEY