Error with Screen.FromControls(this).WorkingArea;

#5480
private void ScreenshotAutoPlusUI_Load(object sender, EventArgs e)
{
Rectangle screenRect = Screen.FromControl(this).WorkingArea;
this.DesktopBounds = screenRect;
int heightSidePanelNeedsToBe = screenRect.Height - HeightOfAreAboveViewport;
screenshotAutoTop_Panel.Height = HeightOfAreAboveViewport;
screenshotAutoSide_Panel.Height = heightSidePanelNeedsToBe;
this.TopMost = true;
backgroundWorker1.WorkerSupportsCancellation = true;
processUpdates_RTB.Text = "Process status: Opened.";
}
When I use the code above, the screenshotAutoSide_Panel ends up overlapping the search bar in the taskbar by a few pixels. But my taskbar isn't set to AutoHide. It shouldn't overlap at all; otherwise, what would be the point of having both the Bounds and WorkingArea properties? Indeed, when I used the debugger to see what screenRect was assigned to, the size was the same as the resolution of the monitor the panel appeared on.