The Four Fingers joker states that you can form Flushes and Straights with 4 cards.
The Royal Flush description states that you need 5 consecutive cards and all cards need to share the same suit. I assume that with Four Fingers this becomes 4 consecutive cards sharing the same suit.
I formed a hand with:
King of Clubs, King of Clubs, Queen of Spades, Jack of Clubs, 10 of Clubs
As you can see:
I formed a 4-card Flush using any combination of the King of Clubs x2, Jack of Clubs, 10 of Clubs.
I formed a 4-card straight with 10,J,Q,K
I did not have any Jokers that made Clubs or Spades equal, nor did I have any wild cards.
Note that if I remove one of the Kings from my hand, my hand becomes a regular 'straight', despite still having a king of clubs.
The game told me I had a Royal Flush in hand. Since I formed a straight with the Q, shouldn't the Q also be Clubs to fulfill the requirement for a Royal Flush? Now I only have 1 or 2 consecutive cards sharing the same suit. rather than all 4.