+++ This bug was initially created as a clone of Bug #343803 +++

Konsole keeps running in the background after closing the window by clicking the X in the window frame. After closing the window, the process starts to consume a constant 25% of the CPU.

If I close Konsole by typing 'exit' in the terminal, it closes normally and does not keep running in the background.

Reproducible: Always

Steps to Reproduce:
1. Open Konsole and do something: 
# mkdit ~/temp
# ls
2. Close Konsole by clicking the X in the window frame
3. Open ksysguard and observe that Konsole is still running, now with a 25% CPU loading.
4. Kill the Konsole process
5. Repeat step 1
6. Close Konsole by typing 'exit' in the terminal
7. Konsole is not running in the background.

Actual Results:  
Konsole keeps running in the background after closing the window by clicking the X in the window frame. After closing the window, the process starts to consume a constant 25% of the CPU.

Expected Results:  
Konsole should not be running in the background after closing the window.

Plasma 5 desktop 
Frameworks 5.6.0

Further note:  if CL "exit" or "tab" X is used to close konsole, the problem does NOT occur. - sheepmud