As discussed with Navnath, Regression is working fine for Linux with currently generating installer for pgadmin4 i.e. edb-pgadmin4-1.1-1-linux-x64.run
For windows I am unable to run the regression with currently generating installer i.e RM # 2046 .. This RM was fixed so I generated a test windows installer with upstream latest code from git master branch of pgadmin4. but I am still unable to run the regression on windows but issue is different from RM # 2046. I have shared the log with Navnath. He is currently looking into this (Debugging it), I will proceed after the his feedback