Not a new issue but worth reporting anyway :) When opening a new tab, only the close button on the right of the tab bar close them. The close button on each tabs has no effect.
Oh you're totally right ! I will fix it soon. (I never use it so I didn't see this problem.).
Git commit c0df7b314518bcae5bec7afc6c23f0a1c5f42012 by Montel Laurent. Committed on 07/09/2015 at 19:26. Pushed by mlaurent into branch 'Applications/15.08'. Fix Bug 352393 - Close button doesn't close FIXED-IN: 15.08.1 M +10 -0 messagelist/pane.cpp M +1 -0 messagelist/pane.h http://commits.kde.org/kdepim/c0df7b314518bcae5bec7afc6c23f0a1c5f42012