Multiple select boxes should not use the click event
click event to watch for updates on the value: https://gitlab.science.ru.nl/clean-and-itasks/iTasks-SDK/-/blob/f96ed050908fa72f6eed6b7a473e1ac813a7edf5/Libraries/iTasks/UI/WebPublic/js/itasks-components-selection.js#L123-129
This is not right: updates made with the keyboard (arrow keys, Ctrl-Space to toggle, etc.) are not handled.
This is possibly relevant for checkgroups (radio buttons) as well.