*** This bug is a duplicate of bug 1735986 ***
https://bugs.launchpad.net/bugs/1735986
That issue points to bug 1735986 so let's use that.
** This bug has been marked a duplicate of bug 1735986
Unable to set different scale correctly on different monitors
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You received this bug
The scale setting is only locked in integer mode, they can be
independently adjusted if "Fractional Scaling" is selected.
This probably is https://gitlab.gnome.org/GNOME/gnome-control-
center/-/issues/17
** Bug watch added: gitlab.gnome.org/GNOME/gnome-control-center/-/issues #17