Hello, I recognized that for some reasons pgAdmin4 does not allow to re-attach some of the previously detached partitions:
Here is the test script to reproduce: create table test (id integer, col1 integer, col2 integer) partition by list (id); create table test1 partition of test for values in (1); alter table test drop column col2; create table test2 partition of test for values in (2); alter table test detach partition test1; alter table test detach partition test2; pgAdmin4 allows to attach back test1 but not test2! Both tables can be re-attached with alter table command without any problems. I'm on pgAdmin 4.2 on Centos7 and Fedora 29
