The requirements are user needs to add item, delete item, and input values in a dashboard. I've published the module and actions to insert and delete items. The problem is whenever I add an item, the grid (module) does not expand to show the new item created. I already set the height to 100. Please see attached screenshot.
David is correct, this is a bug. If you haven't yet, please enter a support ticket so it can be tracked (I know for a fact it has already been entered by other clients, but the more people noticing it will put more pressure on getting it fixed). In my testing, it seems to work when there are 3 children already defined under the parent, but when there are 0 or 1, it the grid doesn't always reshape itself. The only workaround that I know, is to add the member and have a button to refresh the dashboard.
We've had this same problem recently (I don't remember it being this way). We've gotten around it by using a boolean line item and applying that filter, so when the dashboard refreshes after adding the item the module's filter is refreshed.