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Tree Style Tab scrambles tabs on restart when tab suspender is also running

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running on OSX 10.9.5, firefox 57.0.1. I had two windows open with many suspended tabs yesterday, today upon re-opening firefox a strange dialog came up from tree-style tab which I had to click restore on to get one of my windows back, and in both windows all the tabs were organized completely incorrectly.

running on OSX 10.9.5, firefox 57.0.1. I had two windows open with many suspended tabs yesterday, today upon re-opening firefox a strange dialog came up from tree-style tab which I had to click restore on to get one of my windows back, and in both windows all the tabs were organized completely incorrectly.

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I think the developers of those extensions would be in a better position to explain what happened (and how to avoid it) than we are.

The standard, built-in session restore feature should keep tabs within a window in the correct order, but it does often restore the windows in a new order.