In full screen at 1600 x 1200 (I know, right; who uses a 4:3 monitor anymore?), when loading one of the first quests, I could see the armory stuff on the table. Not sure if this is a bug, exactly, since when you finish the quest, it lerps over from the game board to the armory/loot screen, but it seems like it's probably a bug.
I'm so jealous of your monitor I can't even see the whole module page without fullscreen. This is likely the app not taking monitor resolutions into account.
That's not armory stuff, that's stuff for editing your characters. It scrolls up into view at various times to let you edit your decks, such as between missions in a 3 mission adventure.
Yes, and in case it isn't clear, you often may drag the screen between the two yourself. Not always, but sometimes. The items are on the same table, and you can look back and forth between them like real objects, and so it is intended behavior.