Today my Valla was at 4 Stars, I upgraded her to 5 Stars. Played for a couple of hours with her at 5 Stars. Then towards the end of the day went to check the stats of my heros and she was back down to just 4 Stars.
So, clearly this Bug is not yet fixed and I have not received any compensation for this Bug and what it has Cost Me. I am still waiting, and growing more and more disappointed in the Buggy State of this game.
It is starting to look like Tynon just does not care about their paying customers.