SimpleMapProperty<String, String> map = new SimpleMapProperty<>(FXCollections.observableHashMap());

Add several change listeners and modify the map. Nothing happens.

Example code attached.

Expected output:

Map Listener 1
Map Listener 2
Map Listener 3
Boolean Listener 1
Boolean Listener 2
Boolean Listener 3

Actual:

Boolean Listener 1
Boolean Listener 2
Boolean Listener 3

If any 2 of 3 map listeners are commented out, remaining single listener works. All 3 boolean property listeners work fine.

Workaround is to bind another SimpleMapProperty and add listener there. This trick works as many times as required.