Can you show me a screenshot?

У меня такая же проблема.

It is a same game.

(It's I, the reporter of this issue)
I couldn't upload the original screenshot because of the size so I used some squeeze app.

Here is another example and I saw that it's happening with purple cards too.

no legendary 1.png (238,445 bytes)

no legendary 3.png (251,923 bytes)

Can confirm. had the same happen; had 1 legy in earned loot while ingame. unit dropped another one. and the overview on pause menu still showed only one.
I do not know if it was 1+1 of the same thing (like 1+1 dust) that would only show up as one card since it is the same thing.

Hhmmm. ...your idea can be a real thing, nice.

Looks like you have received the same item, most probably that was a Bit dust.
Bit dust stacks and enemies usually drop 1 dust so if you have 2 or more at the end of your game, there's no bug

just a thought: a player will not know he is gaining bit dust since the card is hidden. so not getting another card feels buggy/incorrect. One solution is to put a x2 or whatever above the one card or list them as seperate cards when in pause menu.

KartOMania has a idea that is can be a thing for future reports like this from newcomers.
Anyways, I pleased for your attention and wish luck.

Will add "1+" tag on such cards

Bit Dust is now always uncovered in the list of loot