A small Glass panel with a spinner and a title over a dimmed screen, for short blocking work.
When to use
A few seconds of work that must finish before anything else, such as signing in.
Best practices
- Appears only after a short delay, so quick work doesn’t flash it.
- The title says what is happening: “Signing In…”.
Avoid
- Background work. Use a progress toast.
- Long work. Show progress and let people continue.