Wacom touchpad does not rotate along with "left-handed" tablet setting
Enabling the "left-handed orientation" option in the Wacom Tablet panel of the GNOME Control Center rotates the device by 180 degrees in order to make it easier to use for lefties. While this works fine for the tablet part of the device, if it also has a touchpad (e.g. Intuos Pro), the touchpad is not also rotated to match.
It looks like the update_tablet_left_handed
function in src/backends/meta-input-settings.c
needs to be updated to search for a "sibling" touchpad and call settings_device_set_bool_setting
on the touchpad as well, if it exists.