Hello,

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Thank you!

If you reload the page between clicks, does it work again?

I haven't installed that button (drag it to the Bookmarks Toolbar, I assume?), but if I get time later I'll try it out.

No, it doesn't. Even for freshly-opened tabs, I get the problem if I've already done it once in the same instance of Firefox.

Picture is attached. But to give you an idea, that was a hard screenshot to take - it only flashes yellow for a quick second and then returns to white. And nothing else happens.

I don't think an ordinary bookmarklet can change the color of the address bar...

Have you installed an Amazon extension? If so it would be listed on your extension list here:

Help > Troubleshooting Information (second table down the page)

Alternately, perhaps you have another extension which is blocking the Amazon form submission for security reasons. But then, why wouldn't it kick in the first time??

To check on potential interference, you could test in Firefox's Safe Mode. That's a standard diagnostic tool which disables extensions and some custom settings. More info: Diagnose Firefox issues using Troubleshoot Mode.

You can restart Firefox in Safe Mode using

Help > Restart with Add-ons Disabled

In the dialog, click "Start in Safe Mode" (not Reset)

Any difference?

I had the same problem! I searched for a support fix, saw your post, clicked it, became enraged when I realized ithad yet to be fixed, searched Google for a fix, immediately became more enraged, wasted hours of my life,found solution to question, rage rwas replaced by glee.

but I hated the way my browser was behaving. took me forever to figure it out. It is the Firefox  add-on called clean links', (the 5-Star rating beguiles and infuriates me) It is also a featured add-on... Maybe I'm an idiot but the cons outweighed the pros. I mean, when did relentless notifications - which require your immediate personal attention, become acceptable!? Lemmings! They're everywhere! I AM ENRAGED!

But I digress; clean links; sir! There is your culprit. (I hope!) Disable it, remove it - whatever - and you got your browser back.

Clean Links - begone.

I like my links dirty anyways!

Hope this helped!