Character creator cannot be used when offline

As I said in the title, character creator keeps resetting when offline whenever you close and open the game.

Steps to reproduce:

1-Create a new character creator skin while online and add some customizations.

2-Exit minecraft then relaunch this time while offline, the character creator will show an endless "loading" animation.

Join a world.

Observed results:

You get equipped with default Steve or Alex.

What should have happened: 

See the character as you left it before relaunch.