total count of entries - UI misses pixels (open again)

[ilippert]

JabRef 4.0.0-dev--snapshot--2017-07-03--master--6897b10fb
Linux 4.11.7-200.fc25.x86_64 amd64
Java 1.8.0_131

Whilst #2803 was closed, the same issue happens in the current version again.

[lenhard]

I can confirm this still occurs, but I'll take the liberty to change the tags.

It's not a bug (the GUI doesn't break down, freeze, etc.) and its not a show-stopper for 4.0 (plenty of other things to fix before that)