I have encountered a problem with view size animations leaving border lines when moving around. I was dealing with this issue in the past in some demo, but it “dissappeared” later so I didn’t worry about it.
Turns out the problem dissappeared, because I was using bitmaps with transparent border offset, so it was not visible. But if I use a different image as a background for a CViewContainer which I am moving around with animation, it leaves lines when the zoom is not 100% until the view under the moving one is marked invalidated again.
I am guessing it is some rounding issue, that tells the view which rectangle to redraw?
The whole video is here