Its direct parent has wfName.
Macro Macro3168
To discover it I used LibreAutomate. Its "Find window" tool is better. LA code would be
Macro Macro3168
int w=win("LINQPad 7" "*.Window.*")
int c=child("" "WindowsForms10.Window.8.app.0.2aeb54d_r3_ad1" w 0x0 "wfName=panEditor")
c=GetWindow(c GW_CHILD)
To discover it I used LibreAutomate. Its "Find window" tool is better. LA code would be