I've been running Maps continuously since about 6:00 a.m. CDT (it's now 1:00 p.m.) on Chrome (v37.0.2062.124) on a desktop computer running Windows 7. Within the last 30 minutes I noticed that I can no longer click the left mouse and drag the map around to change my field of view. When I refresh the browser the feature resumes, but of course I lose all of my data layer settings, etc.
Just for the heck of it, I'm going to close out Chrome now (since I had to refresh anyway) and run it on Firefox and see if I can duplicate the same condition.
Thanks,
Rob