QML Keys.pressed event not generated for certain keys + CTRL modifier (WinRT)

Using the Keys component in QML, a pressed event is generated for most CTRL + key combinations but not for the keys H, I, J, K, L, M.

e.g. H on its own generates an event. CTRL on its own generates an event on press. But CTRL + H does not generate any event.

In contrast, on Windows platform (not WinRT), CTRL + H would also generate an event complete with event.keys and event.modifiers set to correct values.