• I have tested the latest master version from http://builds.jabref.org/master/ and the problem persists

JabRef version <JabRef 5.0-dev--snapshot--2018-09-06--master--6c5bc563f> on <Debian GNU/Linux testing (buster), Linux 4.17.0-3-amd64 amd64, Java 1.8.0_181>

Steps to reproduce:

1. Open Jabref. java -jar JabRef 5.0-dev--snapshot--2018-09-06--master--6c5bc563f.
   . After google "Gtk-Message", I installed "libatk-bridge2.0-*, the warning was persistent.
   
2. Now let's check JabRef main UI,
   
   and the "Option" > "Preferences" panel, for example,
   
   obviously, the entire window is cut off, the "OK" button is invisible, though it actually exist.
3. Again, I install the stable version, JabRef-4.3.1.jar, open it as previously. Sadly, the warning is persistent.
   
   But, the preference panel was normal.
   
   My question is,

1. If i want to use dev version, what should i do to avoid the "Gtk-Message", because i belive the problem i encounter is arised by module "atk-bridge", though the OS is actually installed.
2. or i just use the stable version, and wait for the newer stable version.

Many thanks!

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