Firefox for Android Community Forum

For the past two weeks, I haven’t been able to access youtube.com on Firefox. Every other browser loads it without any issues. I’ve already tried switching devices, reinstalling Firefox, changing networks and locations—but nothing fixes it. The YouTube app works fine, and this problem only occurs when opening youtube.com in Firefox.

On desktop Firefox, I get:

Secure Connection Failed An error occurred during a connection to youtube.com. PR_END_OF_FILE_ERROR

On mobile Firefox, I get:

Cannot Complete Request Additional information about this problem or error is currently unavailable.

I would appreciate any help resolving this issue.

A site I use, bestcrosswords.com, has been acting weirdly since late on 11/18. Instead of the highlighting changing with the active word, the highlighting has gone completely haywire. I have already posted regarding that and filed a bug report (the problem does not occur in DuckDuckGo), but the site has started giving a suggestion I cannot follow.

Please see the image. I can see how the suggestion works on a desktop, but not a phone. Please forgive me if it's considered too obvious to document, but despite searching the phone's software and the Web for advice, I cannot find anyway to follow the site's suggestion.

Could someone clarify the point for me?

Thank you.

This is all on my Android phone but I use the Stash app for investing here https://www.stash.com/ but the Google SSO button redirects me to https://accounts.google.com/gsi/transform with a blank screen and nothing happens. If I instead open the webview in Firefox as part of the browser app, then Google SSO works fine for me. Since it works in Firefox as a browser it seems to me this must be a bug in Firefox when in a webview. Any idea what's going on?