NOTE: This bug is reproducible in Responsive Design Mode.

STR

1. Go to https://expired.badssl.com/
2. Click at "Advanced button"
3. From advanced page click at "Go Back(Recommended)" button

Expected Result:
"Go Back(Recommended)" button is responsive.

Actual Result:
"Go Back(Recommended)" button is not responding in small frames.

Build ID 20190311102806
User Agent Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:67.0) Gecko/20100101 Firefox/67.0

Can I work on this issue?

Hi Monika, I won't stop you from submitting a patch but note that this could be quite a difficult task, to be honest I'm not sure what's happening here and it's also not a big priority to fix it.

Will try it if I could figure out.

I don't find "Go Back(Recommended)" button unresponsive.

Hi Monika, I edited STR. Please take look.

Yes. It is not responding in small frames. Will look at it. :)

Getting this error JavaScript error: chrome://global/content/elements/browser-custom-element.js, line 1088: uncaught exception: 2147500033 when clicking button through responsive mode. And after that even if you exit the responsive mode "Go Back(Recommended)" button is not responding.

Huh, can you use the Browser Toolbox to debug browser-custom-element.js and see why this exception is thrown?

[Exception... "Method not implemented'Method not implemented' when calling method: [nsIWebNavigation::sessionHistory]" nsresult: "0x80004001 (NS_ERROR_NOT_IMPLEMENTED)" location: "JS frame :: chrome://global/content/elements/browser-custom-element.js :: construct :: line 1088" data: no] getting this on browser toolbox.

Works for me now, we must have fixed this somewhere along the line...