SUMMARY In KMail on the left side, for e-mail folders, I have three columns, Name, Total and Size. Somehow the size column has become extremely wide, I am talking about many many display widths, I strongly suspect by ifself. The same happens sometimes when I start KMail to a smaller extent by itself in the right section also where the e-mails are. There I can just drag the column more narrow so it can be contained on the display. But for the left section that does not work. # uname -a Linux HP-Compaq 5.5.9-desktop-1.mga7 #1 SMP Thu Mar 12 08:02:44 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux KDE Plasma Version: It should have been on top of the start menu. But I can not find that information anywhere I have thought of looking.
After a new clean installation of Mageia linux, the bug is no more there.