Page index > Tree tab does not find the expected documents

Test :

• Create from the space Main, pages TestPage1, TestPage1.1, TestPage1.1.1 each one as a nested page from one an other in following this scheme TestPage1 > TestPage1.1 > TestPage1.1.1
• Go in the index page (/xwiki/bin/view/Main/AllDocs?view=tree)
• Search for "test"
  • Only sandbox pages are found
• Search for "testpage"
  • No page are found
• Search for "testpage1"
  • Here you'll find 2 pages TestPage1 and Sandbox.TestPage1
• Search for "testpage1.1"
  • The exact match is found but testpage1.1.1 is not found

Expected behaviour :

• Find testpage1 1.1 and 1.1.1 in each case