It's unrelated. We're trying to track it down still. Sorry about that
Not sure how much I can say, but the leak is somewhere in the subscriptions, which isn't in Reason. Ironically the goal is to convert that section to Reason so that refactoring can finally be done (I've left that part out of the blog post just in case). Messenger produced the grandfather of Flux; it's not the easiest thing to refactor.