[eythian]

> But yes it’s ridiculous that I can’t update Firefox snap while it’s still open.

Agreed, it really could use some kind of staging installation that it can quickly switch to.

> And that it won’t auto update if I just close Firefox after getting the pop up about needing an update and wait a few seconds. I’m optimistic that will happen.

This does seem to happen now. I'll get a notification that something has an update ready, I'll close it, and a few moments later a notification that the update has been installed and I can click that notification to relaunch it.