I've just begun the "creating posts, polls, and questions" module on Trailhead. I have progressed to the part where you're supposed to post something via Chatter. However, my issue is that, I'm not able to type anything in the textbox.I can see the Post, Poll, and Question tabs. Therefore, it doesn't appear to be a layout issue. When I attempt to click in the field my mouse cursor changes to a red "no" symbol and the "post" button is greyed out. This prevents me from typing anything in the field.I have checked in Setup and Chatter is enabled. I am using the Lightning layout, Summer '17 release, and Google Chrome as my browser.Any ideas?
