When executing following code (like in the API How To, but translated to Matlab):

context = realsense.context;
devices = context.query_devices;

I get following Java/Matlab error in a popup:

After a while a crash follows.
Calling sensors = context.query_all_sensors does work without errors, so I can work around the problem by using context.get_sensor_parent(sensors{i}) to get the devices, but it is cumbersome.