Drawer sometimes blocks parts of (or the entire) UI even when closed and non-modal

Run the attached QML app on the iOS Simulator.

In its initial state, you can't tap the top TextArea to focus and type. But if you tap to focus the bottom TextArea first, then you can focus the top one.

If you hide the bottom TextArea then you get a bit more stuck because you can't tap to focus it anymore.

Then open and close the drawer. After that, again you can't tap on either the top TextArea, nor on the top half of the big button; but you can tap the bottom half of the button, because it's not in the invisible Drawer's "shadow".

If you start up the app and immediately click the checkbox to turn off the "dimmer" overlay (that sets drawer.dim to false), you won't be able to interact with anything in the app anymore, except that you can still open and close the drawer manually. (And doing that does not fix it: the rest of the UI is still frozen.) This seems to happen whether or not it's modal; but the modal checkbox may affect behavior in other cases.

There are other combinations of things you can do that will make it behave strangely.