Selected Categories Counter issue

Description

There is an issue with Category property: the total number of selected categories shown for a node doesn't work if the category node with the name has no spaces and the Display Name has a space.

Scenario #1
Steps to reproduce:

1. Set up the category node with a name having no spaces and the Display Name with a space. For example:

   Name	Display Name
   InformationType	Information Type
   General	General
   Document	Document
   Form	Form

Expected: Select items then collapse them. The total number of child items selected shows next to the node.
Actual: The total number of selected items doesn't show.

Scenario #2
Steps to reproduce:
1. Create a parent category whose Name and/or DisplayName contains a number or upper-case character with a sub-category below the parent. For example

2. Open the Select Categories dialog in edit view.
3. Select the sub-category below parent category.
4. Collapse the parent category.

Expected: It shows the number of selected sub-categories, e.g. Test (1).
Actual: Does not show the number of selected sub-categories.

Note: No such issue if the parent category's Name and DisplayName contain lower-case chars only.