Should show a load spinner for a short time on page load. This avoids the issues like these:
A user saves a page, gets a generic "the page was saved" message, edits some fields, and the message remains unchanged.
A user tries to save a form and is shown some error message. They try to change some fields, but do not actually fix the error. They hit save again, the message remains unchanged (which may lead them to think this is an error since they think they have fixed the error referred to by the message).
Both these issues are mitigated by a short animation indicating that the message has been re-loaded/updated (an animated load spinner).
Should show a load spinner for a short time on page load. This avoids the issues like these:
Both these issues are mitigated by a short animation indicating that the message has been re-loaded/updated (an animated load spinner).