'copy to clipboard' only copy/pastes the first 127 rows into gimp

[themusicgod1]

0) have a gimp running
1) run gnome-screenshot
2) take screen shot
3) click copy to clipboard
4) alt-tab to gimp
5) edit
6) paste as new image

The new image has 127 rows of the screenshot data followed by the correct number of other rows EXCEPT the other rows are of a single greyish colour (0x979899).

(Saving the screenshot to file, and opening file in gimp works fine as a workaround for opening screen data in gimp)

What should happen

When you 'copy to clipboard' it should copy the whole image to clipboard.
and 'paste' should retrieve the image data from clipboard into the gimp canvas.

(Whether this is a gimp issue retrieving from clipboard or gnome-screenshot giving the data to clipboard I am not sure, but somewhere the clipboard data is not being passed properly)

 Ubuntu : 17.10 artful
 Desktop: gnome/wayland
 gimp : 2.8.20-1
 gnome-screenshot : 3.25.0-0ubuntu2

ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: gnome-screenshot 3.25.0-0ubuntu2
ProcVersionSignature: Ubuntu 4.13.0-25.29-generic 4.13.13
Uname: Linux 4.13.0-25-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.7
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Tue Feb 6 11:07:59 2018
InstallationDate: Installed on 2017-04-18 (293 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
JournalErrors:
 Error: command ['journalctl', '-b', '--priority=warning', '--lines=1000'] failed with exit code 1: Hint: You are currently not seeing messages from other users and the system.
       Users in the 'systemd-journal' group can see all messages. Pass -q to
       turn off this notice.
 No journal files were opened due to insufficient permissions.
SourcePackage: gnome-screenshot
UpgradeStatus: Upgraded to artful on 2017-10-19 (109 days ago)

[Rolf Leggewie (r0lf)]

FWIW, works fine for me in bionic

[themusicgod1 (themusicgod1)]

not sure if the same bug but does the same thing with different numbers of line...occasionally in focal