Got it.
Seems to work the same, except that when I open a new tab from an existing one, it now rearranges all the tabs to put the new one next to the one that opened it. Means I have to search the row, rather than just go to the one at the right hand end.
There's probably a switch somewhere to change that, but I can't find it.
And the "broom icon" to clear history etc has done a runner.