Pie chart rich labels overflow

[Ovilia]

Version

5.2.2

Reproduction link

https://www.makeapie.com/editor.html?c=xWP6wufPiQ&v=2

Steps to reproduce

Problem A: Label overflow

Set label to have big font size like 40 will show the overflow, even without rich text.

label: {
    position: 'outer',
    alignTo: 'edge',
    margin: 20,
    fontSize: 40
}

Problem B: labelLine start position is wrong with rich text

Probably due to bounding box calculation error, the start position of the label is not as close as those without rich text. See the demo.

What is expected?

Problem A: Text should not overflow the canvas.
Problem B: LabelLine start position should be near the text.

What is actually happening?

Problem A: Text overflows the canvas.
Problem B: LabelLine start position is far from the right side of the text.