I have been using your product and noticed a bug when trying to change characters within a string in a textbox multiple times. It only recognises the first instance and none of the others. Example code:
Dim ws As Worksheet = wb.Worksheets(0)
Dim txt As TextBox = ws.TextBoxes(ws.TextBoxes.Add(0, 0, 100, 100))
txt.Text = "hello"
txt.Characters(0, txt.Text.Length).Font.Color = Color.Blue
txt.Characters(2, 1).Font.Color = Color.Red
It is important for us to be able to multiple character changes in textboxes and this is supported for the Cells.Characters so could this be supported as well please?