Openrct2: Windows open on top of each other

[Gymnasiast]

This issue is created for the last remaining problem in #3746.

The problem is that new windows will open on top of each other, rather than cascading.

[mrtnptrs]

If you open a lot of windows and then resize the window, sometimes the windows get cascaded after that. But won't this make all the optimatization done in #3993 useless as the windows won't cover eacht other pixel-perfectly as the windows will be cascaded?

[duncanspumpkin]

This is by design to allow the optimisations.

[Gymnasiast]

By design or not, it's irritating you cannot open more than four windows without having to manually move them. If I didn't want to see a particular window, I wouldn't have opened it. This makes the raised window limit rather useless. It's also not very user friendly: most users will think the covered windows are closed.

[duncanspumpkin]

Its also user unfriendly to have 4fps. In an ideal world the viewport drawing would be clever enough to not force a redraw on a partially exposed window.

[Gymnasiast]

Still, what is the point of allowing 64 open windows if it's already tedious to open five? To me it defeats the purpose if the higher window limit.