If I go to the Firefox extensions and click on "More" for NoScript, then click on the reviews to get the reviews for the script and then click on the button to sign in so that I can comment, Firefox gives me a 500 error if NoScript is enabled - even though mousing over the icon in the tool bar shows 0/0. If I disable NoScript I can log in without a problem. I found a similar situation on an on-line banking site last night - even though NoScript showed 0/0 I had to disable it in order to be able to submit a form.

Update 4.12.2017
In V10.1.4 this no longer seems to be a problem - at least for logging in to post reviews here, I haven't tried the banking site again yet.

Thank you