In the restriction tab of challenge menu there may be some cards player haven't discovered, and I find that for vouchers their image would be displayed, but for jokers they would not. Is that intended?
#Inconsistent "Not Discovered card" display
tulip bison
median dagger
the left does have the joker image
that's what the joker looks like that is unlocked by that condition
or am i misunderstanding the post
do you mean the undiscovered cards' description is inconsistent? since it doesn't tell you what the joker does but it does say what the voucher does?