JabRef version: JabRef 4.0
Linux 4.4.8-040408-generic amd64
Java 1.8.0_151

Steps to reproduce:

1. Create a new entry.
2. Fill in fields, switch tabs in the entry editor.
3. The entry is not selected in the entry table nor it is scrolled to to make it visible. I would expect displaying and selecting the new entry in the table just after its creation.

In previous versions, the entry was selected in the entry table (or at least shown, I'm not sure) after switching tabs within the entry editor, which was very handy, because otherwise shortcuts do not work for this new entry, but rather for some previously selected entry from the table. One for example cannot F4 to open a newly linked pdf without first finding and selecting the new entry in the table.