Hello Andrew! I believe the size of the pop-up is a browser setting, can I have you try in Chrome from an Incognito Session and let me know your results? The other thing I'd like to have you review is what your current zoom level settings are configured for in Chrome as I believe this could affect the display of the pop-up window as well. Let me know what you find out there :)
Kyle Kerst
IT Coordinator
SmarterTools Inc.
www.smartertools.com