Unable to display Tutorial

[clochix]

Reported by @nicofrand.

People having installed the application a very long time ago have a “Tutorial” note, created at application installation, explaining how to use the application. But when they click on it, nothing happens.
This happen for example on demo servers (Notes isn't installed by default, but if user install it, the Tutorial appears but clicking on it does nothing).

[clochix]

Tested on the demo server, it seems to work.
@nicofrand don't hesitate to re-open this if you still can't access to the tutorial.