Disappearing links?

I've been using the mxmlChildren setter in ActionScript to
add multiple elements to textflows and paragraphs at once. After
trying the last two Gumbo builds, it seems like whenever I use
mxmlChildren setter to append an array of links and spans to a
textflow or to a paragraph, the links do not show up for some
reason (but the other spans do). Has the way this method worked
changed? Is there something special I need to do for links?
Edit: Actually, I made a coding mistake while trying to
reproduce the issue. The links are still disappearing from my
application when changing the Flex compiler to the last two Gumbo
builds for some reason. mxmlChildren doesn't seem to be the problem
though.

I recommend calling replaceChildren directly.
mxmlChildren is intended for compiled mxml and has special
handling intended of the children intended only for that case. It
tosses out links if they aren't in a paragraph.
Of course if you call replaceChildren on a TextFlow, for
example, it'll throw if you add links that aren't in
paragraphs.

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