Looking thought the release notes for ESR 60 a possible change I see that might affect keeping or deleting drafts and templates when doing edits is this: bug 1498866 This solves a template problem but it also seems to touch removing drafts. I haven't studied the code so don't know if this is relevant or not. Reporter Tas, does the problem occur if you just let auto-save occur and don't click save? I think it defaults to 5m but you can set it down to 1m to test quicker.
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Looking thought the release notes for ESR 60 a possible change I see that might affect keeping or deleting drafts and templates when doing edits is this: bug 1498866 This solves a template problem but it also seems to touch removing drafts. I haven't studied the code so don't know if this is relevant or not. Reporter Tas, does the problem occur if you just let auto-save occur and don't click save? I think it defaults to 5m but you can set it down to 1m to test quicker. Edit: Not requesting that you reconfigure **all** your accounts into a fresh profile but just a few to see where it starts to see the problem. Also, if you can provide exact details on how your tb and the various pop3 accounts are configured it might help in duplicating the problem you see. I'm not 100% clear on how all your pop3 email (Inbox, Sent, etc.) is getting into the Local Folders.