Children display macro breaks when the title of the root is changed and includes a colon

Summary

When the title of the root page used for a Children Display macro includes a colon (:) and changes, the Children display macro using this page as root will appear as broken:

Steps to Reproduce

1. Insert a Children Display macro on a page and specify as root a page which includes a colon.
2. Go to that root page and change any part of the title page.
3. Go back to the page using the Children display macro.

Expected Results

The macro properly displays the children pages of the root chosen.

Actual Results

An error message is displayed in a random language explaining that the page is not found.
If you open the page in edit mode, you will see that the macro is losing its spacekey attribute.

Workaround

• If referencing the Children Pages from another Page in Confluence, remove the colon from the title of the Source Parent Page
  or
• If referencing Children Pages of the Current Page, leave the "Parent Page" option blank