After installing the gtk4 4.6.3+ds1-0ubuntu1 proposed updates, I confirm
that scrolling down in long documents in gnome-text-editor works with
both the jammy mutter 42.0-3ubuntu2 and the jammy-proposed version
42.1-0ubuntu1.

** Tags removed: verification-needed verification-needed-jammy
** Tags added: verification-done verification-done-jammy

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https://bugs.launchpad.net/bugs/1972722

Title:
  Include gtk4 changes needed for mutter 42.1

Status in gtk4 package in Ubuntu:
  Fix Released
Status in gtk4 source package in Jammy:
  Fix Committed

Bug description:
  
  Impact
  ------
  We need to update gtk4 before updating mutter to 42.1. Otherwise, in gtk3 
apps like gnome-text-editor, it's not possible to scroll past the cursor 
position.

  The mutter issue with more details is
  https://gitlab.gnome.org/GNOME/mutter/-/issues/2261

  We need to update mutter 42.1 since it includes a lot of bug fixes.

  GNOME Shell 42.1 (with the corresponding changes to mutter, gtk3 and
  gtk4) will better comply with the Wayland specifications.

  The gtk3 bug is LP: #1972721

  Test Case
  ---------
  Install the updated gtk4 packages.
  Use gnome-text-editor to open a long text file.
  Scroll down past the page break.
  The document should scroll normally.

  What Could Go Wrong
  -------------------
  Ideally, GNOME would have done a new GTK4 release for this issue. They will 
eventually, but it seems better for Ubuntu to be proactive and not further 
delay the mutter/gnome-shell 42.1 releases.

  These commits are cherry-picks from the stable branch
  https://gitlab.gnome.org/GNOME/gtk/-/commits/gtk-4-6

  NOTE
  ----
  To avoid a temporary mismatch related to phased updates, we want this update 
to be 100% phased before releasing mutter 42.1 to jammy-updates.

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