Great game, except for one rule-breaking gripe and one more – Touch Rummy HD Review

I love Rummikub and Touch Rummy does a great job! The sound effects, 3D design, and built-in opponent are really good. I only have two gripe. The computer regularly takes a joker on the board without first replacing it with its represented tile. I'm pretty sure this is against the rules. To use a joker on the board in a different meld, a player must have on their rack the tile that fits in place of the joker. Second, as with playing cards, I play that 12-13-1 is an acceptable run. Enabling this could be a game preference if not everyone plays this way. Fix these two for a five-star rating.
Review by Earthsaver on Touch Rummy HD.