I downloaded postman tar from the official website and extracted the files, just like I did it the exact same way when I was using Ubuntu 16.04. Extracting is working but When I want to launch the application by double clicking the executable, it is not responding. While in 16.04 it would then launch Postman. I'm not getting any errors, just no reaction. I tried the x64 and x86 versions but that made no difference.