Needing help with inconsistent behavior of an Aura component built for our Lightning conversion. The Aura component is very basic and only exists because URL hacks were removed with Lightning. The attached screenshots show how the Aura component can sometimes be rendered incorrectly and usually it takes the user just zooming in/out their browser for the component to fix itself.  The component is built using <layoutitem> and <lightning:card> structure.  Anyone have an idea why this is happening? It happens almost every time in Firefox but Chrome tends to show it correctly the first time.