For the past several weeks, nearly every time I am working in an email, the "add attachment" function pops open. It's usually when I am about to reply/forward to somebody -- I put the cursor in the To box, start typing, and the box to add an attachment pops open. I have worked with the shortcut settings and gone everywhere to see if I accidentally set up this function, but I cannot figure it out, and IT WON'T STOP. This is happening on multiple computers (though always in Chrome). I am forced to conclude there's something wrong with the email system itself. Anyone else having this issue?