PGAdmin 4 1.x, 2.x was really bad. [1]
Well, I just downloaded PGAdmin 4 3.4 and it has improved quite a bit. Those who missed PGAdmin 3 should give it another shot. Thanks to the maintainer, Dave Page [2] for improving it.
[1] https://news.ycombinator.com/item?id=14884713
https://news.ycombinator.com/item?id=15411690
[2] https://www.enterprisedb.com/de/user/254789/published_articl...
