Pagetree macro is causing the page to constantly reload for a non-admin user

See: https://qa-eac.atlassian.com/display/~mhrynczak/Checklist+-+Pagetree

When logged in as mhrynczak, the pagetree content loads with no problems.

When logged in as mhrynczak_test, the macro does not load correctly, and the page will constantly reload.

This can be reproduced with username 'testuser', password 'test'.