Icecrown: Screen blur from the fake defeat in the prologue can persist if the history bar is moused over

[Jetz72]

From srd_27 in the Discord:

Found a bug in Frozen Throne prologue that made the screen blurry throughout the second phase. You do it by looking at the history bar during the transition between first and second phase, when the game was supposed to be temporarily blurry. https://www.twitch.tv/videos/608026277 You can fix the blurriness by looking at the history bar again.