Since the change in Gmail's interface, I've noticed that the Gadgets I use have disappeared. When I tried to expand Gmail's sidebar there were no line with three dots to grab and today I couldn't attach a file, so I tried in Firefox. In Firefox, I found the Gadgets, the line to expand the sidebar and I could attach a file. I've disabled every extension and script in my Chrome but these problems persist. Someone else is having similar problems? There's anything I can do to have, at least, my Gadgets again in Chrome?
Make sure that you are using the latest stable build. The beta version may have issues with certain features. Also I would advise trying to clear your cache and cookies in Chrome and try again and see if the problem still exists.