Factual error: It's very nice that the Kate and Jonas clones came out looking exactly like the originals, but the DNA doesn't contain information about the hair length and exact haircut (and mustache, in Jonas' case) at the time of the replication. They would never come out exactly the same.
Continuity mistake: When Max gave Kate the rose, it was a whiteish-cream color and it had a long stem. When we see the rose inside the house, it is short stemmed and light pink.
