Services.confluence doesn't return a valid reference

[Farcasut]

Describe the bug
ConfluenceSpacesScriptService returns null when provided with a valid xwiki space reference.

To Reproduce
Steps to reproduce the behavior:

1. Create a new space called "Sandbox.Test"
2. Go on a sandbox page and create a velocity script where you call $services.confluence.spaces.getSloppySpace("Sandbox.test")
3. Save the page

Expected behavior
A valid reference to the new space

Actual behavior
$services.confluence.spaces.getSloppySpace("Sandbox.test") returns null