Suggestion:
When viewing a board, add yellow indicator to a card if it has Unsaved Changes
And/or
When trying to exit a card with Unsaved Changes, show a popup to inform the user and have the buttons "Save", "Discard changes" and "Let me view other cards and come back"
Hi Mega, Welcome to the Atlassian Community! I hope you’re enjoying Trello.
We actually do have this feature enabled:
Are you having some trouble with it?
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