No, I haven't used tab groups. At least not beyond an initial peek when they were introduced. They're no replacement or useful addition to my vertical hierarchical tabs (Tree Style Tab extension).

You mean that annoying shit they do where I'm trying to move one tab and it puts it in a colored square with some bullshit?

Yeah there was NO WAY TO AVOID THAT. It straight up did that shit on its own. Like literally it almost magnetically attracted itself to the other tab to pull this shit. It effectively activates it for you this way whether you want it or not.

Man even Firefox is starting to shit the bed with their decision making.