FontDecoration not working in GridView TextBoxCell

Strikethroughs and underlines do not show up in Eto GridView TextBoxCells, though they do work in Labels. I’m formatting like so:

CellFormatting += (s, e) =>
	if (some_condition)
		var font = e.Font;
		var strikethrough = new Font(font.Family, font.Size, FontStyle.None, FontDecoration.Strikethrough);
		e.Font = strikethrough;

The styles work, just not the decorations. Tested against v6.18.19266.14201 on Windows 10.