Animation disappears during Climb Mt Everest Challenge

I have noticed for a week or so that the animation for the Climb Mt Everest challenge goes blank (white screen) shortly after the progress line gets above the flying saucer. The climb meter still works.

I have been experiencing the same thing.

Same here; still not fixed. Using Mac app, latest version, running on macOS Mojave.

For me, white out went away after climbing a little further.

And for me too