It's just the Guidance bug. Right now there's a bug in how Guidance displays its bonus. In other words, it's inconsistent. In my screenshot above, the ACTUAL DC is 15, and my ACTUAL roll is 1d20+8, because I'm actually getting +3 from Guidance. But the game is applying a different roll of the Guidance die to every place it displays, so the game is showing the "target" of 9 as if the Guidance rolled a 1. This is why there are tons of screenshots on the Reddit of people failing rolls where they actually rolled high enough to meet the displayed target, or succeeding on rolls where they actually rolled lower than the displayed target. It's because the displayed target is not showing the ACTUAL amount of Guidance bonus.
