GNOME and Firefox Consider Disabling Middle Click Paste By Default (phoronix.com) 8
Both GNOME and Firefox are considering disabling middle-click paste by default, arguing it's a confusing, accident-prone X11 relic that dumps clipboard contents without warning. Phoronix reports: A merge request for GNOME's gsettings-desktop-schemas was opened this weekend to disable the primary-paste functionality by default that allows using the middle mouse button for pasting. Jordan Petridis argued in that GNOME pull request that middle-click paste is an "X11'ism" and that the setting could remain for those wanting to opt-in to enabling the functionality [...].
The gsettings set org.gnome.desktop.interface gtk-enable-primary-paste true command would be a way of restoring the primary paste (middle click paste) for those desiring the functionality. The decision over the default has been tasked to GNOME's design team for consideration.
Separately, Mozilla is also considering disabling middle mouse button paste by default too. [...] Another option being considered is having the option to enable/disable it at either the GTK toolkit level or Wayland compositor level.
The gsettings set org.gnome.desktop.interface gtk-enable-primary-paste true command would be a way of restoring the primary paste (middle click paste) for those desiring the functionality. The decision over the default has been tasked to GNOME's design team for consideration.
Separately, Mozilla is also considering disabling middle mouse button paste by default too. [...] Another option being considered is having the option to enable/disable it at either the GTK toolkit level or Wayland compositor level.