Fancytree warning

Since updating to v 9.0.2, whenever I display the sitemap I get a warning in the console: main.js:187
Fancytree@1 $().fancytree(‘getTree’) is deprecated (see JSDoc: Mixin: Fancytree_Widget)

It doesn’t seem to cause any problem. Any way I can fix or supress this.

Steps to reproduce:
Go to the Dashboard.
Open the console in devtools window (F12)
Click “Full Sitemap”
Warning appears in console