Changing the StartPoint property of PathFigure does not cause the figure to recalculate the drawing area

Describe the bug

I created a path to link my uielements, but when I tried to change StartPoint property, the line breaked at the former X-Y boundary, but when I changed the Point porperty of LineSegment, everything worked well.

before draging

after draging

Steps to reproduce the bug

1. Create a path as followed and add it to page.

    Path path = new();
    PathGeometry _pathGeometry = new();
    PathFigure _pathFigure = new();
    LineSegment _bezierSegment = new();
    _pathFigure.StartPoint = new(X, Y);
    _pathFigure.IsClosed = false;
    _pathFigure.Segments.Add(_bezierSegment);
    _pathGeometry.Figures.Add(_pathFigure);
    path.Data = _pathGeometry;

2. change StartPoint property of PathFigure and Point property of LineSegment respectively. When startpoint changes out of the former drawing area, the boundary doesn't expand.

    _pathFigure.StartPoint = new(X, Y);
    _bezierSegment.Point = new(X, Y);

Expected behavior

No response

Screenshots

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NuGet package version

None

Windows version

No response

Additional context

No response

Start from the PathFigure.StartPoint property and compare its drawing-area update behavior with LineSegment.Point, using the reproduction code in the issue. Trace how changing each property affects the path bounds; done means moving StartPoint beyond the former bounds expands the rendered drawing area without leaving the line clipped.