STR: 1. Launch Firefox. 2. Set the "Show my windows and tabs from last time" option. 3. Open multiple windows. 4. Close the browser by right-clicking the icon in the OS taskbar and selecting the Quit option. 5. Start Firefox again. Expected Results: All the open windows are restored. Actual Results: Firefox 26, 27: Three tabs are restored (the one open from step 1 + 2 more). Firefox 28: Only the initial tab is restored (the one open from step 1). Notes: * This issue only reproduces on Windows and Linux. I tested on Windows 7 64bit, Ubuntu 13.04 32bit and Mac OS X 10.9. * The issue goes back to Firefox 7.0.1: ** Firefox 6.0.2 and older work the same as Fx28. ** Firefox 7.0.1 up to Firefox 25.0.1 work the same as Fx 26 and 27.
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