When click in right region of GIMP window focus move to underlying window

[phpcoder]

Steps to reproduce:
Open GIMP
Maximize its window
Click in right region on window

Expected result:
GIMP window element will activate

Actual result:
Underlying window will activate

GIMP version:
Package: gimp
Version: 2.10.34-1
Priority: optional
Section: universe/graphics

ProblemType: Bug
DistroRelease: Ubuntu 23.04
Package: gimp 2.10.34-1
ProcVersionSignature: Ubuntu 6.2.0-34.34-generic 6.2.16
Uname: Linux 6.2.0-34-generic x86_64
ApportVersion: 2.26.1-0ubuntu2
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Thu Oct 12 21:27:38 2023
InstallationDate: Installed on 2023-09-28 (14 days ago)
InstallationMedia: Ubuntu 23.04 "Lunar Lobster" - Release amd64 (20230418)
ProcEnviron:
 LANG=ru_RU.UTF-8
 PATH=(custom, no username)
 SHELL=/bin/bash
 TERM=xterm-256color
 XDG_RUNTIME_DIR=<set>
SourcePackage: gimp
UpgradeStatus: No upgrade log present (probably fresh install)