Hi,

The people who answer questions here, for the most part, are other Firefox users volunteering their time (like me), not Mozilla employees or Firefox developers.

If you want to leave feedback for Firefox developers, you can go to the Firefox Help menu and select Submit Feedback... or use this link. Your feedback gets collected by a team of people who read it and gather data about the most common issues.

Also see your latest thread :

https://support.mozilla.org/en-US/questions/1299373

I just looked at a tab and it became another window. I didn't want that. Maybe I moved a pixel.

Firefox has long supported "tear off tabs" to move a tab to a new window, and you're not the only user to think it is too sensitive. Fortunately, Firefox 74 added a new preference that lets you to disable this feature:

(1) In a new tab, type or paste about:config in the address bar and press Enter/Return. Click the button accepting the risk.

(2) In the search box in the page, type or paste detach and pause while the list is filtered

(3) Double-click the browser.tabs.allowTabDetach preference to switch the value from true to false

Success?

More info on about:config: Configuration Editor for Firefox.