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Firefox 137.0.2 randomly moves tabs to the far right of window

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I use Firefox for work and need to have a lot of tabs open, in a certain order, in a single window.

Frequently, when I click on a tab, Firefox moves that tab all the way to the right and I have to scroll over and move it back to its proper place. It also sometimes happens when I type in a text field on a tab and hit return. The tab "disappears" and I find it all the way to the right. It never used to do this in older versions of Firefox.

I don't think I'm doing something different than usual to trigger it. It just seems to be at random.

I really need to figure out how to stop Firefox from doing this. It's frustrating, disruptive, and slows down my work.

Platform: MacOS Ventura 13.7.5 and Firefox 137.0.2

Thank you in advance for any help you can give.

I use Firefox for work and need to have a lot of tabs open, in a certain order, in a single window. Frequently, when I click on a tab, Firefox moves that tab all the way to the right and I have to scroll over and move it back to its proper place. It also sometimes happens when I type in a text field on a tab and hit return. The tab "disappears" and I find it all the way to the right. It never used to do this in older versions of Firefox. I don't think I'm doing something different than usual to trigger it. It just seems to be at random. I really need to figure out how to stop Firefox from doing this. It's frustrating, disruptive, and slows down my work. Platform: MacOS Ventura 13.7.5 and Firefox 137.0.2 Thank you in advance for any help you can give.

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