pgAdmin 4 version 3 fails to open a second time
“Elephant” icon menu

When pgAdmin is running, an elephant icon menu appears. Look at the upper right corner of the screen. The elephant refers to Slonik, the Postgres mascot.

Choose New pgAdmin Window menu item.



FYI, pgAdmin 4 is built as a web app, not a desktop app, even when run locally on your own computer. Note that the internal web server provided by pgAdmin 4 is running continuously, even after you close all windows. Use the Shutdown server menu item, as seen above, if you want to stop that web server.

p.s. I agree, it is very confusing that clicking the icon does not do the same thing (when pgAdmin is already running).