No image-size dropdown when image pasted
After installing El Cap on two iMacs and one MacAir (from the same downloaded installer) when I paste an image into a new email message, the image shows up but I don't get the familiar "Image Size" dropdown menu that lets you scale to 'small, medium, large." I also can NOT select the image and drag it. However I do get the Markdown option when I hover over the image. It is same on all 3 machines. Maybe the installer was corrupt? But everything else works well?
Ideas?
Maybe trash a plist of some kind?
Help!
iMac, OS X El Capitan (10.11), null