Switching between tabs does not keep position of elements

I’m using the dojo.Layout TabContainer and TabPane controls from the extension Library. Inside of the tabs I have floating panes. When I move the pane I would like to keep the current position of the pane when I switch from tab1 to tab2. This does not work. The element is always moved to the original position.

I also tested with dijit.layout.TabContainer and dijit.layout.ContentPane and this works as expected. The video demonstrates the behaviour.

Is there any parameter to set for the controls to work like the dijit.layout.TabContainer and dijit.layout.ContentPane do?