Public bug reported:

In April 2024 there was a fix provided on:

  https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1471

for a rounding problem, which caused buttons and menus which extended to
the top of a window would not be selectable when clicking on the first
row of pixels.

Practically, this fix means, when moving with the mousepointer to the
upper edge of the screen and clicking on a widget or menu, it will
respond accordingly.

The fix consisted of replacing all four instances of trunc() with
floor() in the file ../mi/mipointer.c

It was merged in their server-21.1-branch. Will this merge be also part
of the following package/version?

Package: xserver-xorg-core
Version: 2:21.1.12-1ubuntu1.3

At the moment, I need to patch/build/install manually, but it would be
more efficient if this step would not be required.

** Affects: xorg-server (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2103703

Title:
  rounding issues around zero in miPointerSetPosition

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