I have noticed that if Vivien2’s ability grant’s a basic evergreen ability to a creature that I have a copy of in play with a different evergreen from vivien the resulting creature stack does not get both abilities. If the first use gives first strike and I play the creature and the second use fetches the same creature and gives lifelink I would expect to end up with a first strike lifelinker after playing the second copy but I don’t, I just have a first striker.
This issue is now under investigation.
Thank you for the feedback!