Review of the pop-out work found ways to lose text, a wrong sign-out and
changes reaching ordinary browser tabs.
- Drafts: a closing window hands text over only to a main window holding
its login, and asks instead when the last save failed, the browser is
offline, a save is running or plugins could still have a say. A failed
rescue goes to "Continue draft". The opening window lets go only once
the composer is on screen, also for Edit draft in a message window.
Send options travel with the draft. Closing during a send asks first.
- Sessions: answers are encrypted for the window that asked, and only a
window holding the login answers. A renewal queued on the lock can be
called off by a sign-out, signs nobody out once its account is gone, and
takes the cached token after waiting (Rauthy `nbf`, #552).
- Ordinary tabs run none of the host. No lock is held for life.
- A message window hides after a refused session and waits for its
folders; a composer stays on screen with its text. Another tab dropping a
login it couldn't restore no longer closes pop-outs.
- Plain-text mail stays selectable in the desktop app. Folder save renames
reserved and shell names and skips one refused name. All display-mode
checks know the overlay. The attachment bar keeps to one row.
The earlier test that accepted text being gone after a failed rescue now
asserts that it reaches the "Continue draft" slot.