The main chunk carried everything the mail view might open: the file
preview and its Markdown renderer, the composer and its editor, the contact
editor, the filter and share dialogs, and the calendar, contacts and files
sidebars. Each is now loaded when first shown. The composer is also
fetched when the browser is idle after startup, so the first Compose does
not wait on the network.
Import the notification helpers statically where they already were: the
dynamic imports beside those static ones split nothing.
A maximised composer goes position: fixed but stays a child of the dock,
and had no z-index of its own. The dock is a stacking context, so the
positioned parts of any composer later in the DOM (its recipients row, its
editor) painted straight over the full-screen one.
Give the maximised composer its own layer, and hide the other composers
while one is full screen: they cannot be reached anyway, and the 24px
inset would otherwise show their footers along the bottom edge. They stay
mounted, so nothing being written in them is lost.
Fixes#330
jcoffey-dev