Checkboxes with null text don't work with baseline alignment

I have a Label and a Checkbox on the same "line".. (in a row of a GridPane, with wrapping HBoxes and VBoxes around the checkbox.. the baseline offset should be propagated from the control) they are configured to be aligned to the baseline, but it isn't working. The checkbox intentionally has null text, as the label is sufficient.

I think the checkbox should align as if text were present. It does so in JavaFX 2.2.