This surfaced while looking into iframe errors:

[2:34pm] MBeat: XenoRyet: thank you. would JS=off cause the iframe to not open, specifically?
[2:34pm] XenoRyet: Definitely wouldn't get as far as the iframe opening.
[2:34pm] XenoRyet: Let me try it real fast to see what the exact behavior is.
[2:34pm] MBeat: thank you
[2:36pm] XenoRyet: MBeat: Ok, the form loads with a message at the top explaining that javascript is required and gives a link to a non-JS donation method. Clicking continue or one of the card icons does nothing.
[2:37pm] XenoRyet: Though that link leads to this: https://wikimediafoundation.org/news/2016/04/25/engaging-librarians-1lib1ref/
[2:37pm] XenoRyet: which doesn't seem quite right.