Not sure if this is a bug or a deliberate move, but 3* blue evo runes are no longer dropping. Since picking up my Enduring talismans, these have completely ceased to drop.
I know that this isn't normal, or simply bad luck, because I've kept plenty of logs on drop-rates of these types of runes through my level farming. I was, on average, pulling one of these every 4 plays in Kingdom of the Sands... and even more often when playing the "Unturned Stone" stage. This week, I've farmed that and others in KotS at least 60 times, and have not received one. NOT ONE.
I'm willing to believe this is 'accidental' but please fix it.