[Affected versions]: - Firefox 52.0.2 - Firefox 53 beta 9 - latest Developer Edition 54.0a2 - latest Nightly 55.0a1 [Affected platforms]: - Windows 10 - macOS 10.12 - Ubuntu 16.04 [Steps to reproduce]: Example of steps when we fail to import data: 1. Start Firefox 2. Have data in Edge and keep it open. 3. Import data from another browser (in this case Edge) [Expected result]: - If we fail to import data from browser (from whatever reason) let the user know this with a message in Import Wizard or after closing the wizard (other ways to do this are more than well received). [Actual result]: - We don't have a way to tell the users that we failed to import data, we say that the import is complete even when we don't import anything. [Regression range]: - This is not a regression, we have this behavior since forever.
Too late for firefox 52, mass-wontfix.