gnome-sushi does not center preview on screen

Status changed to 'Confirmed' because the bug affects multiple users.

Could you please try to reproduce this on latest version available in 12.04?
---
Ubuntu Bug Squad volunteer triager
http://wiki.ubuntu.com/BugSquad

Happens on 12.04 as well.

in Ubuntu 13.04, changing the following in /usr/share/sushi/ui/mainWindow.js worked for me

    gravity: Gdk.Gravity.NORTH_WEST,
    windowPosition: Gtk.WindowPosition.CENTER_ALWAYS,

in

  this._gtkWindow = new Gtk.Window({ type: Gtk.WindowType.TOPLEVEL,
                                             focusOnMap: true,
                                             decorated: !this._clientDecorated,
                                             hasResizeGrip: false,
                                             skipPagerHint: true,
                                             skipTaskbarHint: true,
                                             gravity: Gdk.Gravity.NORTH_WEST,
                                             windowPosition: Gtk.WindowPosition.CENTER_ALWAYS,
                                             application: this._application });

For me the block started on line 77.

I don't know anything about gtk+, so I hope that someone that knows how to do this kind of things well finds the better solution. I believe that part of the problem might have to do with the window from were this one could be getting its relative "origin" position (hope that makes ANY sense...), since a little centered window seems to appear just before the actual sushi normal window shows, right when I hit space, and when playing with the different possible values I was able to find for "gravity" and "windowPosition", it appeared as if this little window was being the one to which the normal one related its positioning.

Hope that helps a little at least

Hi, this is quite old but I am getting that in ubuntu 22.04. I don't recall experiencing this in 20.04.

DistroRelease: Ubuntu 22.04
Package: gnome-sushi/jammy,now 41.1-1 amd64
Uname: kernel 5.15.0-41-generic

To reproduce :
- install gnome-sushi (sudo apt install gnome-sushi)
- pres 'space' in an image or text file
Outcome: the preview is not centered