Steps to reproduce:

1. Create general empty project
2. In States view, create new state group
3.  -> New state group (stateGroup) is created and shown in States view as expected
4. Create another states group (stateGroup1)
5. stateGroup1 is created, but States view still shows previous stateGroup-> would expect to switch to the new created group
6. Select Default state group using the combobox
7. -> not switching to Default as expected, but states view still shows stateGroup
8. Repeat step 6
9. -> Default state group now selected
10. Seems that you need to select the state group twice each time, in order to switch the group