Gdk-CRITICAL 2nd copy&paste/special fails NVIDIA

on a PC ubuntu 22.04 with NVIDIA card (problem not noted with PC with Intel graphics)
start gnumeric
enter some data
start another gnumeric
try to copy&paste special (say as value) the data from gnuemric1 to gnumeric2 (I use right click)
WORKS
try it again
FAILS...error message:

(gnumeric:889202): Gdk-CRITICAL **: 10:34:00.932: gdk_window_raise: assertion 'GDK_IS_WINDOW (window)' failed

I suspect this is not limited to gnuemric

ProblemType: Bug
DistroRelease: Ubuntu 22.04
Package: gnumeric 1.12.51-1
ProcVersionSignature: Ubuntu 5.15.0-46.49-generic 5.15.39
Uname: Linux 5.15.0-46-generic x86_64
NonfreeKernelModules: socwatch2_15 vtsspp sep5 socperf3 pax nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu82.1
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: ubuntu:GNOME
Date: Mon Sep 5 11:01:55 2022
InstallationDate: Installed on 2018-05-28 (1560 days ago)
InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: gnumeric
UpgradeStatus: Upgraded to jammy on 2022-08-12 (23 days ago)