I don't think it should matter whether the new job is pre: true or not, the insertion point should be the same either way. I think we only need to check the pre flag on jobs that are already in the queue.

I believe this change would introduce a regression. The middle-- part seems unnecessary, and can lead to the insertion point being before the flushIndex:

SFC Playground - regression

Notice how the component doesn't re-render when the button is clicked, because the rendering job is inserted too early in the queue.

Here's that same example with the current main:

SFC Playground - working

I've opened a separate PR, #7748, where I've proposed an alternative fix for the original problem.

@skirtles-code
Thank you for the review and your point is correct.
Close this one.