Comment 54 for bug 589485

(In reply to comment #51)
> As about multiple different monitors (like laptop + monitor), I don't know
> how is better. Mac OS just uses DPI from primary one (if it use it at all)
> and it sucks... because just moving window from one display to another
> changes it physical size....

In a non-Zaphod multi-head configuration, I don't think there's any "right"
answer, especially when you consider that outputs can overlap. So you just
need to pick something arbitrarily in this case. No matter what choice you
make there will be very weird consequences, such as what you describe above.