Thanks a lot for the detailed reports — they made all three easy to track down. All three are fixed in the next version so please update the game:
Blood tokens in a stack: this was a real bug. NeoForge was supposed to split identical tokens into separate cards as soon as a selection starts, but the split only happened on the next board update, and the game doesn't send one while it's waiting for your pick. Now the stack splits the moment the selection begins, so you can pick both Blood tokens for Strefan (or any number of identical tokens).
Minimizing selection windows: there's now a "View battlefield" button above any choice window. It hides the window without cancelling it: you can look at the board, zoom cards, open graveyards and exile, and zoom or pan the table. Then click "Back to the choice" (or press Esc), and your selection is still there. While you're looking, clicks on the board don't do anything, so you can't accidentally answer something else.
Zooming revealed cards: right-click now zooms cards in the reveal and "choose a pile" windows (Fact or Fiction and similar). The pile window was making its cards ignore the mouse so a click would pick the whole pile, and that also blocked the zoom. Left-click still picks the pile.