1.x-1.1.0

Fixed

• Multiple messages in one batch now all display. Previously every message was
  rendered as popover="auto", and per the HTML Popover API specification,
  non-nested auto popovers light-dismiss each other — so only the last message
  of a batch was ever visible. All popovers are now popover="manual", with
  auto-dismissal handled by the timer.
• AJAX dialogs (Views UI settings/filters, and any core AJAX insert) no longer
  break while the module is enabled. The behaviour now normalises the context
  argument before using native DOM methods — core's ajax.js passes a jQuery
  object, which previously caused a TypeError that aborted the AJAX command
  chain, leaving dialog content dumped at the bottom of the form.
• Settings saved as 0 now survive: "0" in the persistence limit or auto-dismiss
  timer was silently coerced back to the default (300 / 8000) when the form
  redisplayed. A timer of 0 now genuinely disables auto-dismissal end-to-end.
• Messages containing markup but no plain text (e.g. image-only) are no longer
  silently discarded; empty wrappers with nothing displayable (such as Devel's
  <pre></pre> from an Execute PHP run with no output) are still filtered.
• The persistence character limit is now measured in characters rather than
  bytes (backdrop_strlen), so multibyte text is classified correctly.
• Drag handling no longer leaks document-level event listeners for every
  message shown; a single delegated listener pair is registered once.
• Popover IDs are unique across HTMX swaps within one page session,
  preventing close buttons from targeting the wrong message.

Added

• Graceful fallback for browsers without the Popover API: messages display as
  fixed toast notifications with a working close button instead of being lost.
• Escape key closes all visible messages.
• Accessibility: messages carry role="alert" (errors) or role="status", plus a
  visually hidden severity label for screen readers.

Changed

• Severity icon locations are resolved server-side with base_path() and passed
  to the stylesheet as CSS custom properties, so icons work at any module
  location and on subdirectory installs.
• Documentation updated to match current behaviour (British English).