2 issues with Shiko and Narset, Unified

Tunist

I seem to have found an issue with Shiko and Narset, Unified and a possible additional issue. Both issues are with the second part of the ability "Then: Draw a card. If that card is not a blue card, it gains full mana."

The first issue is that when you cast your blue card and it draws you a non blue card that card only gains a maximum of 16 mana. If the card costs any more than that it will just gain the 16 mana but not full mana as described.

The second possible issue is that colourless cards drawn by the draw ability do not gain mana at all. As I read the ability on the card colourless cards are not blue and should be eligible to gain the full mana (or at least the 16)

Tunist

Has anyone else noticed this? Issue is still the same. Cards don't get full mana if they cost more than 16, and colourless cards don't get mana at all.