In konsole profile you can define the appearance for the tab describtion. One template you can use is User Name %u. This currently shows only the current user logged in to KDE, not the user that is active in the console when you switched for instance with su. This worked before. Reproducible: Always Steps to Reproduce: 1. Open konsole 2. Configure the profile to show %u in the tab description 3.Use su <username> to switch to another user Actual Results: The username used to log into KDE is still shown Expected Results: The <username> that was switched to with su is shown.
I can't reproduce this - you are on the latest version and Linux so it should work. If you can provide an image and if anything unusual about your system. The code uses /proc/ and getpwuid_r to find various info. Also try running konsole from an xterm or another terminal to see if any errors print.
This bug can be closed. It works again. I am using Plasma 5.8.3 and konsole 16.08.02 now. Not sure exactly when it was fixed.
Thanks for the update, closing.