Font weight wrong for Arial

Summary

Text that is displayed in Arial is rendered bold when the font weight should be normal and normal when it should be bold.

Steps to reproduce

Enter text in a cell and set its font to Arial.

What is the current bug behavior?

The text is displayed bold. The Bold button correctly tells that the cell is not.

What is the expected correct behavior?

Text rendering should be normal.

What system and libraries are you using?

Manjaro KDE with Wayland. Pyspread latest pycel branch using PyQt6.