To bypass the issue with the junk card popping up everytime it is rolled, you can paste: Game.getPlayerData().inventory.push('garbage') into the console. This will force it into your inventory and stop the popup.
Dev: If you don't want to add the garbage card to inventory then I think the following change should work (around line 960 in game.js). Current:
const isNew = meta.isNewViaUpgrade || !playerData.inventory.includes(rarityId);
addCardToInventory(rarityId);
Change it to:
const isNew = meta.isNewViaUpgrade || addCardToInventory(rarityId);
This fixes both single roll and multi roll x5 (didn't test x10). Would recommend hotfixing this as the game is currently unplayable with a popup for the garbage card happening whenever it is rolled.