Comment 51 for bug 327863

I'll look at your nested-div case, but one immediate comment:

> (Can we just make the scrollbar frame not put the scrollbars on the display
> list when they're supposed to be hidden, instead of trying to reflow them at 0
> size?)

this sounds like the approach roc suggested in comment 26; it corrects the visual errors but not the "size changed during incremental reflow" assertions. The pres shell is trying to reflow the scrollbars themselves, and AFAICT there is nothing the scrollframe can do to stop it.