This seems to happen mostly when a long ish email is being viewed. Please see the screenshot and take a look at the very bottom of the image.. the status bar is overlapped by the text pane. I've blured out my personal data. Maybe this should go in another bug report: Also, when you select the last but one item in the inbox (sorted with most recent at the bottom), and the final email is new, certain overall window sizes cause the mail list to judder up and down when you try to scroll using the scroll bar block.
This looks like bug 41994.
*** This bug has been marked as a duplicate of 41994 ***
Status: UNCONFIRMED → RESOLVED
Last Resolved: 17 years ago
Resolution: --- → DUPLICATE
Status: RESOLVED → VERIFIED
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