When I click the "make request" button, nothing happens. I get an error in web console:
history.pushState is not a function
https://test.wikipedia.org/w/static-1.21wmf11/extensions/ApiSandbox/modules/ext.apiSandbox.js
Line 789
Note, things up to that point work (selecting what type of request, etc) work
Tested on Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.16) Gecko/20110302 Iceweasel/3.5.16 (like Firefox/3.5.16)
Same symptoms on Google chrome 5.0.342.7 beta (Don't know if same exception, couldn't figure out how to get to the equivalent to the js console on chrome)
Yeah I know, my web browsers are a bit old.
Version: unspecified
Severity: normal