When resizing container quickly, size "auto" for real elements fails.

[tomalec]

Calculating desired dimension reads scrollSize of the element in its previous position, so its content may wrapp. We could move it to (0,0) before, but still we will read dimensions before transition is finished, so when the element is still on its previous position, but it is "cut" by windows size.

It could be fixed by disabling transition while calculating size, but this would result with no transition at all when window is being resided smoothly.

[tomalec]

Let's leave it for a moment, as it is small glitch in very specific scenario, and focus on other tasks.