Joker battle freeze problem pc

[paypaytr]

hey im fighting with joker with abromovic and a titan i killed all of them and gave achievement and bats are came but after all thing on screen are going joker batman and peoples something is happening? and if i press home button it is okay. work very well.if i do alt tab and back to game screen is black and a batman save logo right . but nothing happens it must come a cut scene but doesnt come

[greeknet.com]

Not for the case(batman don't kill!)