Does konsole requires to show window before ran command?

I am not Qt expert, but I am change some konsole code to do not shown windo=
w=20
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 (wit=
h=20
Gemmini) create eBPF filter to listen for reading on pts. After some operat=
ion=20
on pts was done, I will send signal to konsole to show window.

Best regards,
S=C5=82awomir Lach.