Notifications macro fails to display notifications for a space with an ampersand in the name

To reproduce:

• Create a top level page named "A&B"
• Also create a top level page named "A"
• On some other page (like the wiki home page) add the following content:

  {{notifications spaces="A" count="5" displayOwnEvents="true" useUserPreferences="false"/}}
  
  ----
  
  {{notifications spaces="A&B" count="5" displayOwnEvents="true" useUserPreferences="false"/}}

• Notice that the notifications for space "A&B" are not displayed but they are for space "A"