Version: (using KDE 4.0.83) Installed from: Debian testing/unstable Packages In KDE3, there was a subtle border around the list item of the mail that is currently being displayed. This was very helpful when multiple list items (= mails) were selected, as one could always tell which mail one was looking at. This feature is missing in KDE4 (4.0.82). I guess it's not directly related to KMail, but rather the implementation of the list widget (or maybe even theming), so I'll leave it up to you to re-assign this wish to the correct module.
This seems to be a bug in the Oxygen style, this works fine with Plastique. BTW, KMail still uses K3ListView. Reassigning to Oxygen and clarifing title.
Just to note that this wish is at odds with http://bugs.kde.org/show_bug.cgi?id=165225 But that this is more important, just for K3ListView we probably aren't going to spend much time fixing.
See also bug 165422.
Happens also with QTreeWidget.
*** Bug 166790 has been marked as a duplicate of this bug. ***
Still present in 4.0.98.
It the same bug as it's all itemview *** This bug has been marked as a duplicate of 168912 ***