As stated, when I close browsers usually some random group of tabs, usually at the starting left side, will be moved to the end of tabs. I need to go in and manually select them and send them to the start or manually move them. Sometimes another group that was to the right of the starting tabs shows up in front of those moved to the end. I have 4 working windows with multiple tabs open. When all are closed, say as to reboot, the last one I was in usually is the one effected. Happens probably 7 or 8 times out of 10 closings.