A blur effect (any blur effect) is applied to an adjustment layer that is on top of 2 video clips.
3 keyframes added: 1st - zero blur, 2nd - full blur, 3rd - zero blur
This should create a blur out of clip 1, blur in of clip 2.
there is no change in blur value between 1, 2, or 3rd keyframe.
worked in previous versions. I had to bring back a project where I used this type of effect and now I have to recreate it, MANY times.
I have 3 video layers that I need the same blow-out effect on and rather than apply the same effect to 3-4 layers, I used an adjustment layer to affect all layers; this also allowed me to copy this adjustment layer and use it later in the timeline.
Maybe this is fixed in later versions of PP CC; we can't upgrade in my facility until approved by engineering so we're stuck for a very long time.