Move page dialog doesn't display Page Tree under the Browse tab

Issue Summary

When moving pages using the Browse tab, the Page Tree is not being displayed with the loading spinner.

Steps to Reproduce

1. Navigate to any Confluence page
2. Select ••• > Move.  The Move page dialog box appears.
3. Using the Browse tab, Select a different space to the page's current space
4. The Page Tree section will continue to load

Expected Results

The page tree is shown to find the new parent page for the content.

Actual Results

The Page Tree is not being displayed with the loading spinner.

Workaround

Use the Search tab in the move page dialog to select a target page for the move