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Blank tabs and messages for open emails in TB

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  • 4 maju toś ten problem
  • 5 naglědow
  • Slědne wótegrono wót Wayne Mery

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My open emails from previous Thunderbird sessions have blank tabs and empty message windows. How can I get them visible again? The tabs serve as a sort of To Do List, which is now gone. Please see picture. Thanks.

Ian_

My open emails from previous Thunderbird sessions have blank tabs and empty message windows. How can I get them visible again? The tabs serve as a sort of To Do List, which is now gone. Please see picture. Thanks. Ian_
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Does the following help?

Help > Troubleshoot Mode > Reset toolbars and controls