In a match earlier, I had beaten 2/3 of the AI team before the last member (either Venom or Juggernaut) used a World Rupture team up. I used Storm’s Wind Storm to stun him but it wasn’t enough to down him. After I made my match, the World Rupture tiles counted down even though the entire surviving enemy team was stunned.
Same bug happened for me except that it wasn’t a WR but a Flame Jet TU.
Last man standing was stunned but it still continued to count down and dish out damage every turn.
Also last surviving goons can use TU abilities which they probably shouldn’t be able to