Thank you, Frédéric, despite a few bug reports the upgrade went very smoothly and it's great that we have a modern version of Bugzilla now.
Was it a conscious decision for the "Add me to CC list" checkbox to be ticked by default? It means that I get added to the CC list whenever I comment on a bug, something I do often as a maintainer, but I rarely want to be CC'd by default. I follow most bugs via the email archives and only CC myself on bugs I am especially interested in (I use searching for myself in the CC list as a search for the bugs I care most about.) I'm sure I can get used to unticking the checkbox before I comment, I'm just wondering if I'm the only one who preferred the old behaviour.