According to the release notes, 2* Daken’s Black at level 4 should be “7 Blue tiles to avoid “Heat””, but I am rebuilding mine and his Black is on level 3 and he has this ability already, but my level 4 says “Heal 5% per turn” (which according to the notes, I should have already). This fits perfectly with the old version though.
The only explanation I can think of is that you were looking at the black cover, not your character. The cover would show lvl 1 black and show the level 2 upgrade. Do you have a screenshot?