Author: titoxd.wikimedia
Description:
Adding <categorytree>Category</categorytree> to a page causes the category tree
to render, as expected, but typing '''<categorytree>Category</categorytree>''',
to try to make the region bold, causes the tree to not open. The tree also fails
to open when the [+] to its left is clicked.
Version: unspecified
Severity: normal