There appears to be no method to work with more than one HTML module in a single pane.

One HTML module is at the top of the content pane. That module works fine.  Placing another HTML module beneath that top module results in the lower module showing-up, but there's no way to access any controls to edit that lower module.  In that lower module there're no action buttons to enter the edit mode, or to change the module settings.

Am I missing something.  Thanks.