[Bug 1404006] Re: grub2-themes-ubuntu-mate partially obscured submenus

[Marc]

Apologies. Mea culpa - I'm afraid I'm rather new to bug reports. I will
check and update the notes there. Thanks.

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Title:
  grub2-themes-ubuntu-mate partially obscured submenus

Status in ubuntu-mate:
  Confirmed
Status in grub2 package in Ubuntu:
  Incomplete
Status in grub2-themes-ubuntu-mate package in Ubuntu:
  Confirmed

Bug description:
  Using Ubuntu MATE, the included /etc/default/grub, and grub2-themes-
  ubuntu-mate (as of 0.3.6~trusty4 and 0.3.6~utopic4), sometimes the
  only portion of the submenus (and edit dialog, etc.) that is visible
  appears directly beneath where the top level menu "box" was; the rest
  is obscured by the "border", and the content appears "cropped"; i.e.,
  when I use the "Advanced options for Ubuntu" submenu, I probably won't
  see a menu of installed kernels, unless I have enough to appear within
  the visible area and/or my resolution is low enough. The applicable
  key controls are also invisible.

  As a workaround, if I hit Esc to get back to the top level menu, and
  go back into "Advanced…" there is no obscuring border any longer.

  This could be a bug with grub2 itself, and might apply to other
  themes; currently using 2.02~beta2-9ubuntu1 (trusty) and 2.02~beta2-15
  (utopic); will see what happens with 2.02~beta2-18.

  Note that update-grub warns that "Setting GRUB_TIMEOUT to a non-zero
  value when GRUB_HIDDEN_TIMEOUT is set is no longer supported" for the
  default config file.

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