bug#55487: chmod to +w is not defaulting to ALL target in Debian 11.3

[Corey H]

in Debian 8.32-4+b1 (Debian 11.3) chmod +w isn't working right.

sudo mkdir /etc/whatever
sudo touch /etc/whatever/whatever.conf
sudo chmod +w /etc/whatever/whatever.conf #doesn't work
sudo chmod a+w /etc/whatever/whatever.conf #does work
#in
man chmod
# it states "If none of these are given, the effect is as if (a) were given"
# so in conclusion the `sudo chmod +w /etc/whatever/whatever.conf` should
work