The relationship between Scene Builder and Firefox

[John C. Turnbull]

I am just a little curious...  I just tried to uninstall my current version
of Scene Builder on Windows and it told me that I needed to close Firefox
before the uninstall could proceed.

 

Why does installing or uninstalling Scene Builder have anything to do with
Firefox???

 

(Apologies if this is not the most appropriate forum for this question...  I
figured I would get the definitive answer here).