Sure, I understand that XaReg is a hack and can only do what it can do.
I was hoping that I might get around the columns issue by re-adding the button via the button palette, but sadly it is not available there. Not a major issue as you can still do columns from the context menu.
During the process I also noticed that the Strike-Through button goes missing from the toolbar too - again this isn't found in the button palette, and can't be found on the context menu either Perhaps there is a keyboard shortcut though.
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