I believe you're right. But I don't think this is a huge problem: you simply don't get the benefits of layout out that specific text in parallel, it'll render s

I believe you're right. But I don't think this is a huge problem: you simply don't get the benefits of layout out that specific text in parallel, it'll render sequentially as browsers tend to do today anyways. You can still get parallelization in other flows outside of the container of the floating elements.