BUG #16055: pgAdmin 4 - ERROR: operator does not exist: - oid

The following bug has been logged on the website:

Bug reference:      16055
Logged by:          Павел
Email address:      holdenru@gmail.com
PostgreSQL version: 9.5.4
Operating system:   freebsd
Description:

http://joxi.net/V2VBGbDfdvLnO2

It works OK with pgAdmin 3.

ERROR:  operator does not exist: - oid
LINE 4: WHERE attrelid=-2016150721::oid
                       ^
HINT:  No operator matches the given name and argument type(s). You might
need to add explicit type casts.

PostgreSQL 9.5.4 on amd64-portbld-freebsd10.3, compiled by FreeBSD clang
version 3.4.1 (tags/RELEASE_34/dot1-final 208032) 20140512, 64-bit