Comment Re:Acid3 != Standards Compliance (Score 1) 258
That is a good point. If Opera is choosing to avoid recalculation if there is no horizontal change because of speed concers, the savings would probably be negligible. I think trading accuracy for speed (when accuracy is attainable) is a poor decision, so there has to be another reason that Opera is avoiding the recalc. Maybe it is just an oversight, and not an intentional tradeoff.
Personally, I resize my browser windows relatively often to test how the copy flows with different sizes and resize events. I would most likely need to resize my windows several times a second to see any measurable performance issue.