I've never tried it; I could tell from the requirements and the "deployment" instructions that I wanted nothing to do with it. Guess I saved myself some grief.
edit: looking back a bit I find this[1] "Ask HN":
"The problem with pgAdmin 4 is that it is garbage"
And no one contradicts this claim.To my mind this situation indicates severe dysfunction in the PostgresQL community. All indications are that pgadmin 4 has been failing hard for at least a year now, and worse, whomever is responsible for this appears oblivious.