Thanks for testing. That's a good result. Now... Restart Windows normally, and start Thunderbird in troubleshoot mode. If the bad behavior returns then the cause is some software or function that starts when Windows is started. Otherwise, if the behavior is still good and problem returns after starting Thunderbird normal, then the cause is an add-on or some Thunderbird startup preference. Please tell us the results.
Bug 1726982 Comment 4 Edit History
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Thanks for testing. That's a good result. Now... Restart Windows normally, and start Thunderbird in troubleshoot mode. 1. If the bad behavior returns then the cause is some software or function that starts when Windows is started. 2. Otherwise, if the behavior is still good and problem returns after starting Thunderbird normal, then the cause is an add-on or some Thunderbird startup preference. Please tell us the results.
Thanks for testing. That's a good result. Now... Restart Windows normally, and start Thunderbird in troubleshoot mode. 1. If the bad behavior returns then the cause is some software or function that starts when Windows is started. 2. Otherwise, if the behavior is still good and problem returns after starting Thunderbird normal, then the cause is an add-on or some Thunderbird startup preference. Please tell us the results.