As a GM, when adding a new card to a deck by dragging and dropping an asset from the library, if the main Deck Window is underneath the New Card window, the deck card back asset is updated INSTEAD of the new card asset. Steps: Log in as a GM In the GM pane, select the "Decks and Tables" tab then select or create a deck. The Deck window is shown. In the Deck window: Scroll down to the bottom of the Deck window (the "Card Backing' asset is fully visible). Press the "+ Add Card" button. The "New Card" window is shown. Drag and drop an asset from any location ("Your Library", web, or file) in to the "New Card" window. The Deck "Card Backing" asset is updated instead. By default, the Deck window is centered when it is created. The same is true for the New Card window (e.g. over the Deck window). In new decks, or decks with small cards, the Add Card Button and the Deck Back are visible (therefore the New Card drop target is over the Deck Back drop target). It appears that the z-order is not understood correctly by the drag and drop handler (presumably the New Card window is not parented to the Deck window). Win7 64 bit Chrome Version 42.0.2311.135 m IE 11. OSX 10.9.5 Safari 7.1.4 Chrome Version 42.0.2311.135 **Note that the gif below shows the windows outside the default position (if the steps are followed as directed, replicates on platforms/browsers above).