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I have encountered an issue with managing trusted senders. I have reproduced the error in Chrome on Windows 7 and 10 and in MS Edge. For some users, clicking the little pencil icons to open their trusted domains and trusted email addresses pops the window and works just fine. On others, nothing happens and then the browser complains about the script being too large. Eventually it crashes Chrome altogether. The count of items that are already in the lists has no bearing on the issue as I have had large lists open just fine and small list cause the crash. Can you please see if you can reproduce the issue? Thanks!