Apple Mail signature window cant be resized since High Sierra Update
I'm running Mail on High Seira on a MacBook Air 13inch laptop.
Since upgrading from El Capitain to High Sierra I can no longer resize the Signature widow in Mail. Usually, when you open mail preferences and select "Signatures" you can resize the pain to enable you to easily adjust your mail signatures actual size.
For me now the Zoom green dot is not working on this pain and there is no way to grab the edge or corner to resize the window.
Please help! How do I fix this?
thanks Mike