Conquest Sector Three Boss (DTMG) Missing buttons when using SLKR

When using SLKR for the secotr three boss:

Stun DTMG
Call Hux Mass Assist on Dark Trooper, game continus but no buttons for player to take any actions.

Reproduced three times and on two accounts.  Thanks for the loss of energy, and having to buy a refresh.  ☹️