Geocortex Manager - Site List appears differently depending on browser

Hello,

I just installed GE 4.0.2 on a Windows 2008R2 VM.

When logged into Manager with Firefox or Chrome, my sites appear to be nested or indented. (see screenshot) However, when logged into Manager with IE, the list appears normally...as a list.  I upgraded my existing  instances from 3.15.1, and when I saw this result, I installed a new instance but the nested appearance is there too, so it's not related to pre-existing files.  What am I missing here?

Thanks in advance.

Firefox and Chrom:

/customer/servlet/servlet.FileDownload?file=00P6000000em1dhEAA

Internet Explorer

/customer/servlet/servlet.FileDownload?file=00P6000000em1eQEAQ