JabRef version 3.2 on Ubuntu 15.04

I usually have more than 2 o 3 bib files open at the same time and change tabs frequently. However, every time I change the tab, the group selection (in the groups interface) is lost and Jabref goes to the default All Entries

Steps to reproduce:

1. Create 2 files with groups (obviously, the groups have to have some entries in them)
2. Select a group
3. Change file tab
4. Go back to previous tab
5. Group selection is lost and all entries are shown