Why auto updater deletes my plugin folder?

I noticed that every time I update phpList I should re install all the non included plugins like View In Browser or RSS Feed.

Is that the way it should work? Why the Auto Updater removes all non default plugins?

@Angel Currently, it’s supposed to work in that way.
Any plugins that are not included in releases are removed and need to reinstalled following update (settings for those plugins in the database are not affected; reinstalling the plugins should make them work as before)