Noscript causes infinite loop on Citibank AU login site

[shopt]

Steps to reproduce:
1) Disable all extensions except for NoScript
2) Go to https://www.citibank.com.au/AUGCB/JSO/s ... eSignon.do

Results:
Firefox becomes unresponsive and goes into an infinite loop.

Firefox Version: 45.7.0
NoScript Version: 5.0rc2 (issue also present on latest stable)

Works fine if I disable NoScript and enable all my other extensions.

[shopt]

I have a firefox stack trace, but posting it seems to trip the spam filter. The top line is

#0 0x00007f2d22515288 in js::RegExpRunStatus js::irregexp::InterpretCode<unsigned char>(JSContext*, unsigned char const*, unsigned char const*, unsigned long, unsigned long, js::MatchPairs*) () from /usr/lib64/firefox/libxul.so

[therube]

Are either of these related?

Citibank page doesn't work

Very odd QUESTION for NoScript experts