Window Tab Separation is a design for Firefox tab management that can be brought into a new window by separating the tabs that open in Firefox from the current tab bar. However, this feature often leads to embarrassing scenes due to mishandling, especially when using a trackpad, the problem is particularly obvious: the tabs are removed by mistake and dragged back.
If you find it annoying or inconvenient to reorder labels or other situations, you can now disable the Tab Detaching feature in Firefox 74.
Mozilla has now finally offered hidden preferences to disable it in the latest Firefox Nightly, an issue that took up to nine years from user error reporting to fix.
How to disable tab separation in Firefox:
1. Visit the o: config
2. In the search box, type “without quotation marks” and switch the browser.tabs.letTabTab’s preferred value to false.
If you’re using Firefox 72, you can install the Disable Tab Detach plug-in, but it may be redundant when Mozilla Firefox 74 ends up with the options above.