this.touched.push is not a function

[hoekie]

Hi!

First of all, thank you for this nestable extension.
I use this extension for a while now withouth any problems but last night, I updated one of my websites with a new release of UIkit (3.9.4).
Sinds then, the nestable option is not working anymore.
It throws an 'this.touched.push is not a function' error.
I know this is some kind of array push error but I can't figure out what has changed in UIkit.

Do you have any idears?

Thanks in advance.

Richard Hoek