Akregator 4.14.2 crash after closing.
Can you reproduce it everytime ? So does it crash everytime on close ?
Can you click on the second tab to gather more information about it.
Or start it from the terminal and show us the output of when it crashes.
After completely removing and reinstall akregator works. After Fresh install Netrunner only error. Default preinstalled app bad works.
Fresh install of 14.1?
Yes, using latest version Netrunner Main. I am a new user. 
It seems to be a bug that is fixed with version 4.14.3.
Since we are using 4.14.2 from kubuntu backports ppa it will be fixed as soon as the packages are updated in the backports ppa.
Reference: https://bugs.kde.org/show_bug.cgi?id=336417