Why in the world am I seeing these tab Groups and Studies After reading some posts on here I went to about:config and browser.tabs.groups.enabled was set to True. I changed it to false. I '''never''' set it to True and haven’t a clue to what Tab Groups are and don’t see any reason for me to have them. I only use about 4 tabs and have no use for any more. But I was noticing a Blue square box next to a tab and clicked on it and it said I had a Tab group which I deleted. Don’t know how a tab group was built, I sure didn’t ask for one and haven’t a clue what they are??? While researching this I seen something that about:studies could be the problem. I looked at it and it showed I was or had been in 4 studies!! All of the studies showed completed. I did not join or ask to be in any studies, what is Firefox doing signing me up for studies? I went to Privacy and Security and nothing under Firefox Data Collection and Use is checked including '''install and run studies'''. I have people’s secured data on here and if it gets out I could be sued! I have run 3 full scans of different virus and all is clear. This must be something Firefox is doing without asking me for permission. I did find that browser.tab.groups.enabled was true, so I know FF must have done that during an update and I set it to False. Some post say FF will change it back to True? What is really strange is the studies, it says they did 4 that are completed, yet it was not checked in the Privacy and Security section. Can't tell when as there is not a date. These were the studies: prefflip-push-performance-1491171•Complete hotfix-reset-xpi-verification-timestamp-1548973•Complete hotfix-reset-xpi-verification-timestamp-1548973•Complete pref-flip-screenshots-release-1369150•Complete