In the recent Live stream the drop rates for the new Empowered Grace Crystal were listed the following way:
1. Base Pool Ascension Cluster Drop - 0.45%
2. Non Ascendable 7 Star Champion - 9.05%
3. 1500x 7 Star Shards - 36.2%
4. 6 Star Champion - 54.2%

I would interpret this as you get either an ascended Champion or a 7 Star that is not in the pool of ascendable champions as of right now.
Pulling a non-ascended Version of a 7 Star that is in the Pool of ascendable champions should thus be impossible.
That being said in my last batch of those crystals I ended up pulling a regular 7 Star Kindred and I'm sure many other people also pulled non-ascended version of the ascendable champions.

So now I'm wondering, was the information from the live stream wrong, am I misinterpreting something or is there some bug?