Refresher causing error (since introduction of split-pane)

Just wanted to integrate a refresher on one of my pages but always get the same error when I open that page:

Error in ./Page1 class Page1 - inline template:10:2 caused by: Unable to get property ‘push’ of undefined or null reference

Any ideas?!

Seems to be a problem with the introduction of split-pane feature… older versions work without any problems.