Firefox 3.5 comes with an annoying problem that I'm not able to solve. The developers - for unknown reasons - have decided to make it possible to drag tabs, which in itself is an interesting feature. Tabs can be dragged into another position in the browser's tabbar, or to spawn a new browser window instead. This closes the original tab in the old Firefox instance, before it gets opened in a new instance.
The big problem is that this happens from time to time without intention on my part. One way to activate tabs is to left-click on them. If that button is pressed too long and the mouse moved downwards just a bit it will move the website in the tab to the new window.
There is apparently no way of disabling the drag and drop tabs into new window feature in Firefox at this point. It happens about once a day that a tab gets accidentally dragged too much around so that it spawns in a new window. The only solution then is to copy the url, close the new web browser window, open a new tab and load the url again in the main browser window. It is not even possible to undo closing the tab in the main browser window as its history will be completely moved to the new browser window as well.
Please leave a comment if you know of a way to disable the spawning of new Firefox windows when dragging and dropping tabs.
Update: As some readers have pointed out, it is also possible to drag and drop the tab back into the original browser window. I'm not experiencing the issue that often anymore. Not sure though if this is because I changed the way I work with tabs in the browser, or if Mozilla has changed the way the dragging and dropping of tabs works in the browser.
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