I've been running the current house event, and I came across an odd bug. When Experiment Kraj is adapted, it gives the +1/+1 bonus to everything and gains the adapt icon. However when the turn ends it removes the icon, and no longer counts as adapted. It doesn't produce any more adapting gems unless it's reinforced, but can no longer reach any of the milestone adaptations. I haven't been able to get enough of them in one turn to verify if the milestones would also vanish. This doesn't seem to be a listed change to the Adaptation mechanic, and I'm uncertain if it functions correctly in other modes. I'll test after I finish posting this.
At the very least it seems to be the same with the Trial of Zeal. I've tested two different stages and both had the adaptation end at the end of the turn.
Smokincookz said: For the subject of Adapt being faulty, I’ll add that when I combined Yarok, the Desecrated with Experiment Kraj, it only adapted gems on the first ETB effect. Have to test it again and with other Adapt cards as well though...