Too bad, doesn't work. Right click -> Find References to Symbol Under Cursor does amazingly nothing for signals defined in QML components. Tried with both property: type and type property syntax, and without properties at all.

Steps to reproduce

1. Create QML component
2. Define some signals
3. Add signal handlers, connections etc.
4. Navigate to the original signal definition (at least, Follow Symbol Under Cursor a.k.a. F2 works)
5. Select Find References to Symbol Under Cursor a.k.a. Ctrl+Shift+U (at least on Linux)

Expected result

Should find all onSignal: handlers, all Connections { function onSignal() }} with compatible targets, all {{signal() invocations, and all other usages of the signal.

Actual result

Nothing happens