For text input (forms, address bar...), in my GTK-3 settings
~/.config/gtk-3.0/gtk.css (attached), I have Ctrl-A bound to the
beginning of a paragraph (the usual meaning in Emacs). But with the
upgrade to firefox 96.0-1, this is no longer taken into account,
and Ctrl-A does a "select all" instead. This is particularly
annoying, and worse, as I'm used to type text just after that,
all the selected data are lost!!!
Note that some of my other GTK-3 bindings, such as Ctrl-E, Ctrl-K
and Ctrl-U, are still honored, showing that this file is still
taken into account.