3v3 Ashoka GL Breaks game

Started my GAC today and decided to use JMK with CAT and GK to face Ashoka. I manage to kill off Hera and Huyang. GL Ashoka used her ult after this and prevented me from targeting her for the rest of the encounter. Likewise no one took any turns after this as GK has attacked the stage. 

This is a serious issue as it affects the gameplay and allows for the timer to continue ticking down but prevents any of the characters from doing anything!