"NoScript" is causing Firefox to slow down on ComEd.com

[User5910]

When attempting to log into <https://secure.comed.com/Pages/Login.aspx> (typing a bogus username and password still triggers the problem) Firefox displays a yellow bar across the top of the screen reading:

A script in the extension "NoScript" is causing Firefox to slow down. Learn more. [Temporarily Disable Extension on Page] [Stop It] [Wait]

It happens regardless of whether I temporarily trust all scripts on the page or not. After several minutes the warning will clear. Clicking the button [Temporarily Disable Extension on Page] may allow the page <https://secure.comed.com/Pages/Login.as ... Error=true> to show, which may trigger another yellow bar.

Logging in from Chrome works normally.

Using Firefox 61.0.2 (64-bit) on Windows 10 Pro 1803.
Also running the 1Password extension, version 4.7.3.90.

[skriptimaahinen]

Same issue and bug as:

ups.com (https://forums.informaction.com/viewtop ... 172#p98508)
t-mobile.com (https://forums.informaction.com/viewtop ... 158#p98457) <-details

[Giorgio Maone]

Please check latest development build,
v 10.1.9.2rc4
=============================================================
x More efficient window.name-based tab-scoped permissions
persistence
x Fixed URL parsing bugs