Does konsole requires to show window before ran command?

[Sławomir Lach]

I am not Qt expert, but I am change some konsole code to do not shown window 
until I asked.
It seems that konsole do not ran given command before it's window is show.

Sorry for asking about this, but is there any way to repair this? I am (with 
Gemmini) create eBPF filter to listen for reading on pts. After some operation 
on pts was done, I will send signal to konsole to show window.

Best regards,
Sławomir Lach.