Public bug reported:

Reproduceable for me by opening synaptic, maximising, then closing and
opening again. Now the maximised window has slightly curved corners
exposing a pixel or two in each of the top corners of the underlying
maximised window or desktop.

This is a glitch that is in contrast to the usual maximised state in
which the title bar and outermost buttons extend all the way into the
corners, in which case the user can 'throw' the mouse into the corners
and easily land on the metacity buttons (Fitt's law).

Fitt's compliance is a fantastic thing, because the user doesn't have to
carefully aim for tiny buttons to for instance close the window, but if
one thing is worse than non-compliance, it is unreliable compliance.
This bug has caused me to accidentally close the underlying window
(sometimes Firefox with many tabs open!) because when the mouse is
'thrown' to the corner, clicking hits the properly drawn maximised
window underneath.

------->See attached screenshots.

p.s., when the window is in a badly-drawn maximised state,
unmaximising/remaximising (eg by double-clicking on the title bar) does
all sorts of weird things with the metacity button position.

** Affects: ubuntu-artwork (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

** Attachment added: "Correctly drawn maximised window"
   http://librarian.launchpad.net/2924836/correct.png

** Attachment added: "Incorrectly drawn maximised window"
   http://librarian.launchpad.net/2924875/incorrect.png

-- 
Maximised windows sometimes have curved corners (significant problem!)
https://launchpad.net/bugs/46652

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