[Gambas-bugtracker] Bug #2333: message windows on gnome opening wrongly

[bugtracker at gambaswiki.org]

http://gambaswiki.org/bugtracker/edit?object=BUG.2333&from=L21haW4-

Bruce STEERS reported a new bug.

Summary
-------

message windows on gnome opening wrongly

Type             : Bug
Priority         : Medium
Gambas version   : Unknown
Product          : Unknown


Description
-----------

on Linux Mint Gnome desktop message windows appear top-left for a moment and then jump to centre screen.

i believe this issue is relevant to the recent issue mentioned on another bug report about me moving a window during a Show event not the Load event as i was having problems with it's placement resetting to 0,0

I will attach a clip...
thank you


System information
------------------

[System]
Gambas=3.16.90 0abf53b59 (bruces-patched)
OperatingSystem=Linux
Kernel=5.4.0-77-generic
Architecture=x86_64
Distribution=Linux Mint 20.1 Ulyssa
Desktop=GNOME
Font=Ubuntu,10
Scale=7
Theme=mint-y-aqua
Language=en_GB.UTF-8
Memory=3824M

[Libraries]
Cairo=libcairo.so.2.11600.0
Curl=libcurl.so.4.6.0
DBus=libdbus-1.so.3.19.11
GDK2=libgdk-x11-2.0.so.0.2400.32
GDK3=libgdk-3.so.0.2404.16
GStreamer=libgstreamer-1.0.so.0.1602.0
GTK+2=libgtk-x11-2.0.so.0.2400.32
GTK+3=libgtk-3.so.0.2404.16
OpenGL=libGL.so.1.7.0
Poppler=libpoppler.so.97.0.0
QT5=libQt5Core.so.5.12.8
SDL=libSDL-1.2.so.0.11.4
SQLite=libsqlite3.so.0.8.6

[Environment]
COMPIZ_CONFIG_PROFILE=mint
DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
DEFAULTS_PATH=/usr/share/gconf/gnome.default.path
DESKTOP_AUTOSTART_ID=10dd4e9190c66d9961162790755343361600000014500017
DESKTOP_SESSION=gnome
DISPLAY=:0
GB_GUI=gb.gtk3
GDMSESSION=gnome
GDM_LANG=en_GB
GIO_LAUNCHED_DESKTOP_FILE=<home>/.config/autostart/Desktopish.gambas.desktop
GIO_LAUNCHED_DESKTOP_FILE_PID=1995
GNOME_DESKTOP_SESSION_ID=this-is-deprecated
GPG_AGENT_INFO=/run/user/1000/gnupg/S.gpg-agent:0:1
GTK3_MODULES=xapp-gtk3-module
GTK_MODULES=gail:atk-bridge
HOME=<home>
IM_CONFIG_PHASE=1
INVOCATION_ID=70d91d38735141c69cf4cc933decfbd1
JOURNAL_STREAM=9:33313
LANG=en_GB.UTF-8
LANGUAGE=en_GB.UTF-8
LC_ALL=en_GB.UTF-8
LIBVIRT_DEFAULT_URI=qemu:///system
LOGNAME=<user>
MANAGERPID=1224
MANDATORY_PATH=/usr/share/gconf/gnome.mandatory.path
PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
PWD=<home>
QT_ACCESSIBILITY=1
QT_IM_MODULE=ibus
QT_QPA_PLATFORMTHEME=qt5ct
SESSION_MANAGER=local/<hostname>:@/tmp/.ICE-unix/1450,unix/<hostname>:/tmp/.ICE-unix/1450
SHELL=/bin/bash
SHLVL=0
SSH_AGENT_PID=1366
SSH_AUTH_SOCK=/run/user/1000/keyring/ssh
TZ=:/etc/localtime
USER=<user>
XAUTHORITY=<home>/.Xauthority
XDG_CONFIG_DIRS=/etc/xdg/xdg-gnome:/etc/xdg
XDG_CURRENT_DESKTOP=GNOME
XDG_DATA_DIRS=/usr/share/gnome:<home>/.local/share/flatpak/exports/share:/var/lib/flatpak/exports/share:/usr/local/share:/usr/share
XDG_GREETER_DATA_DIR=/var/lib/lightdm-data/<user>
XDG_MENU_PREFIX=gnome-
XDG_RUNTIME_DIR=/run/user/1000
XDG_SEAT_PATH=/org/freedesktop/DisplayManager/Seat0
XDG_SESSION_CLASS=user
XDG_SESSION_DESKTOP=gnome
XDG_SESSION_PATH=/org/freedesktop/DisplayManager/Session0
XDG_SESSION_TYPE=x11
XMODIFIERS=@im=ibus
_=/usr/bin/gambas3