TextBox caret skips over "ti" in Calibri

[lindexi]

Describe the bug

I found that Avalonia's TextBox caret and hit-testing behave incorrectly for certain fonts. When using Calibri and typing "ti", the caret movements and mouse hit-testing treat "ti" (as the Standard Ligatures ‘liga’ words) like a single character (the caret jumps over the "ti" pair and you cannot place the caret between them). The same font behaves correctly in WPF.

To Reproduce

Steps to reproduce

1. Create an Avalonia window with a TextBox.
2. Set the FontFamily to "Calibri".
3. Type the text: ti
4. Press the left/right arrow keys or try to click between the characters with the mouse.

The main code is:

      <TextBox Margin="10,10,10,10" FontSize="30" FontFamily="Calibri" Text="tia"></TextBox>

You can find all code in https://github.com/lindexi/lindexi_gd/tree/7c3c7e35c93f7a0dd3ae8f08a04257f20ecaf8c2/AvaloniaIDemo/JeheryucereceruNejukicairloru

The current behavior is:

Expected behavior

Work as WPF:

Avalonia version

Any

OS

No response

Additional context

Reference: https://stackoverflow.com/questions/62552451/why-harfbuzz-shape-2-single-char-into-one-glyph