Hello there dwessel. We have read your message . We try to help you.

Please see this post and the referenced bug report:

https://support.mozilla.org/en-US/questions/1245998

Greetings Firefox volunteer.

The archived bug report 1245998 from three years ago (version 60) was a somewhat similar problem and the workarounds were helpful but don't solve the problem we have now with the new version 91.10.0. I personally have never had this problem in 10-plus years, so it seems to have been a bug introduced with the most recent version. For others who come across the problem, here are two workarounds in the meantime. 1: Ctrl-O opens the email normally (in read mode). 2: Usually I just move the email into the folder where I'm going to be filing it anyway, and read it there. Emails seem to be opening properly everywhere EXCEPT the Inbox.

Thank you for using Thunderbird Software.

Greetings Firefox volunteer.

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