Switching actions doesn't change signal name

Steps:
1) Open studio
2) Open Actions view and create 2 actions with "Emit signal" handler. Name signals e.g. "mySignal1" and "mySignal2".
3) Switch between looking at 1 and 2 action.

Expect to see Signal Name field changing between "mySignal1" and "mySignal2". Actual behavior is that text remains the same, so user doesn't actually know what the correct signal name is.