I have the exact same problem except I have a table inside a subform that needs to repeat on every page. I tried adding your Condition Break code as you wrote above, but it did not work. Do you have any other suggestions? Thank you.
Yes, this.instanceManager.count happens to be the page number only because there is only one instance of your repeatable subform on every page. this(your subform) instanceManager(the instance processing object) count(how many instances of your subform there are).
this.instanceManager.count>this.instanceIndex+1 is a condition that is evaluted every time the layout:ready event is thrown (which is almost all the time/whenever a layout change has occured). What it is saying is if this subform is not the last one goto Top of Next Page. If the condition is false then it just does whatever properties you defined in the Pagination tab.