When trying to add an activity in the latest Moodle 2.3 integration I see a JS crash in the JS console regarding the modchooser

Uncaught TypeError: Cannot call method 'one' of null 

course/yui/modchooser/modchooser.js Line 31: this.jumplink = this.container.one('#jump');

The problem seems to be caused by MDL-36023, which changes the way to initiate the module; this.container is filled in moodle-core-chooserdialogue->prepare_chooser while moodle-course-modchooser is trying to use it in it's initializer.