I have the same bug, but it only happens in bottom panels, not upper panels. I switched the clock and calendar to the upper panel to avoid this bug... otherwise you have to click in panel to bring it to front and see the clock again to close the calendar.
I have the same bug, but it only happens in bottom panels, not upper panels. I switched the clock and calendar to the upper panel to avoid this bug... otherwise you have to click in panel to bring it to front and see the clock again to close the calendar.
regards.