Libreoffice-base: add tables in query design not allowed.
In query design, no more than one table can be added
(F7 does not work and the add-tables icon becomes dimmed after the first table added in query design)
This is true both for version 220.127.116.11 and 18.104.22.168
on xubuntu 16.04
Build ID: a3100ed2409ebf1c212f5048fbe377c281438fdc
CPU Threads: 4; OS Version: Linux 3.13; UI Render: default; VCL: gtk2;
Locale: en-GB (en_US.UTF-8); Calc: group
Other versions and OS not tested. Not found answers for this abnormal behaviour.