Need help: Jetpack 2.2.3 and Pinboard

Hi,

I just upgraded from Jetpack 2.2.2 to Jetpack 2.2.3.

Now I see the following warning before every image:

Warning: Missing argument 3 for Jetpack_Custom_CSS::editor_max_image_size() in /mnt/web1/e1/15/52410215/htdocs/WordPress_01/wp-content/plugins/jetpack/modules/custom-css/custom-css.php on line 1147

This happens e.g. for slider images, article images, …
I downgraded Jetpack to 2.2.2 again and everything is fine.

Can anyone help with the problem? I’m using Pinboard 1.0.6.

Thanks!
Alex