1) make sure you have instances in your cloud
2) check the state of you "filtered" label in the instance view (top right corner, should be hidden or telling "filtered")
3) choose "Filter instances" in the context menu of the instance view
4) set at least 1 filter expression & hit "finish"
Result:
No change in the "filtered" label
Expected:
"filtered" label should change from hidden to "filtered" or the other way round.