Platform, device version, operating system, game speed, team share code, and game mode:
PC, Steam client
Windows 7 (64-bit)
Tower of Doom (Brown) - up to Tier IV Shop purchase only
Screenshot or image:
As you can see, several brown matches were made automatically, but a Hero did not get his barrier to trigger and get active.
Titan class, Rock Solid talent, all fully upgraded.
Doom Battle, Tier IV Shop purchase only was obtained and given Potion effects do go off during when each starting battle. However, during the cascades, several (brown) matches were made, but the Hero did not get the Barrier (Rock Solid talent) active. I believe this used to be different some time ago.
I am not sure if this is a bug or not, so I am posting this here for others to answer my question.
Because of this issue, I had to change the Hero class from Titan to Sentinel Class, to make sure that the first skull match from the enemy did not kill my Hero.